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Finding the Fourth Proportional to 586,750.80, 880,709.40 and 287,569.20

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Solution

The fourth proportional to 586,750.80, 880,709.40 and 287,569.20 is: 431,639.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,750.80 : 880,709.40 = 287,569.20 : x
  2. Step 2: Convert to fraction form
    586,750.80/880,709.40 = 287,569.20/x
  3. Step 3: Cross multiply
    586,750.80x = 880,709.40 × 287,569.20
  4. Step 4: Simplify right side
    586,750.80x = 253,264,897,590.48
  5. Step 5: Solve for x
    x = 253,264,897,590.48/586,750.80
  6. Step 6: Final answer
    x = 431,639.63

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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.