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Finding the Fourth Proportional to 570,387.78, 859,585.43 and 513,518.49

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Solution

The fourth proportional to 570,387.78, 859,585.43 and 513,518.49 is: 773,882.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,387.78 : 859,585.43 = 513,518.49 : x
  2. Step 2: Convert to fraction form
    570,387.78/859,585.43 = 513,518.49/x
  3. Step 3: Cross multiply
    570,387.78x = 859,585.43 × 513,518.49
  4. Step 4: Simplify right side
    570,387.78x = 441,413,009,472.01
  5. Step 5: Solve for x
    x = 441,413,009,472.01/570,387.78
  6. Step 6: Final answer
    x = 773,882.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.