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Finding the Fourth Proportional to 586,921.80, 878,049.90 and 508,902.60

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Solution

The fourth proportional to 586,921.80, 878,049.90 and 508,902.60 is: 761,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,921.80 : 878,049.90 = 508,902.60 : x
  2. Step 2: Convert to fraction form
    586,921.80/878,049.90 = 508,902.60/x
  3. Step 3: Cross multiply
    586,921.80x = 878,049.90 × 508,902.60
  4. Step 4: Simplify right side
    586,921.80x = 446,841,877,039.74
  5. Step 5: Solve for x
    x = 446,841,877,039.74/586,921.80
  6. Step 6: Final answer
    x = 761,331.20

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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.