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Finding the Fourth Proportional to 578,672.40, 868,008.60 and 499,875.60

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Solution

The fourth proportional to 578,672.40, 868,008.60 and 499,875.60 is: 749,813.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,672.40 : 868,008.60 = 499,875.60 : x
  2. Step 2: Convert to fraction form
    578,672.40/868,008.60 = 499,875.60/x
  3. Step 3: Cross multiply
    578,672.40x = 868,008.60 × 499,875.60
  4. Step 4: Simplify right side
    578,672.40x = 433,896,319,730.16
  5. Step 5: Solve for x
    x = 433,896,319,730.16/578,672.40
  6. Step 6: Final answer
    x = 749,813.40

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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.