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Finding the Fourth Proportional to 586,121.20, 807,399.48 and 499,799.32

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Solution

The fourth proportional to 586,121.20, 807,399.48 and 499,799.32 is: 688,488.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,121.20 : 807,399.48 = 499,799.32 : x
  2. Step 2: Convert to fraction form
    586,121.20/807,399.48 = 499,799.32/x
  3. Step 3: Cross multiply
    586,121.20x = 807,399.48 × 499,799.32
  4. Step 4: Simplify right side
    586,121.20x = 403,537,711,072.35
  5. Step 5: Solve for x
    x = 403,537,711,072.35/586,121.20
  6. Step 6: Final answer
    x = 688,488.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.