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Finding the Fourth Proportional to 579,441,801.70, 869,162,702.55 and 443,392,905.70

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Solution

The fourth proportional to 579,441,801.70, 869,162,702.55 and 443,392,905.70 is: 665,089,358.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,441,801.70 : 869,162,702.55 = 443,392,905.70 : x
  2. Step 2: Convert to fraction form
    579,441,801.70/869,162,702.55 = 443,392,905.70/x
  3. Step 3: Cross multiply
    579,441,801.70x = 869,162,702.55 × 443,392,905.70
  4. Step 4: Simplify right side
    579,441,801.70x = 385,380,576,209,709,248
  5. Step 5: Solve for x
    x = 385,380,576,209,709,248/579,441,801.70
  6. Step 6: Final answer
    x = 665,089,358.55

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.