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Finding the Fourth Proportional to 553,669.90, 830,504.85 and 499,432.30

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Solution

The fourth proportional to 553,669.90, 830,504.85 and 499,432.30 is: 749,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,669.90 : 830,504.85 = 499,432.30 : x
  2. Step 2: Convert to fraction form
    553,669.90/830,504.85 = 499,432.30/x
  3. Step 3: Cross multiply
    553,669.90x = 830,504.85 × 499,432.30
  4. Step 4: Simplify right side
    553,669.90x = 414,780,947,396.66
  5. Step 5: Solve for x
    x = 414,780,947,396.66/553,669.90
  6. Step 6: Final answer
    x = 749,148.45

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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.