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Finding the Fourth Proportional to 579,506.60, 869,259.90 and 355,557.80

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Solution

The fourth proportional to 579,506.60, 869,259.90 and 355,557.80 is: 533,336.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,506.60 : 869,259.90 = 355,557.80 : x
  2. Step 2: Convert to fraction form
    579,506.60/869,259.90 = 355,557.80/x
  3. Step 3: Cross multiply
    579,506.60x = 869,259.90 × 355,557.80
  4. Step 4: Simplify right side
    579,506.60x = 309,072,137,672.22
  5. Step 5: Solve for x
    x = 309,072,137,672.22/579,506.60
  6. Step 6: Final answer
    x = 533,336.70

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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.