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Finding the Fourth Proportional to 570,772.13, 787,655.88 and 316,117.85

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Solution

The fourth proportional to 570,772.13, 787,655.88 and 316,117.85 is: 436,237.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,772.13 : 787,655.88 = 316,117.85 : x
  2. Step 2: Convert to fraction form
    570,772.13/787,655.88 = 316,117.85/x
  3. Step 3: Cross multiply
    570,772.13x = 787,655.88 × 316,117.85
  4. Step 4: Simplify right side
    570,772.13x = 248,992,079,387.18
  5. Step 5: Solve for x
    x = 248,992,079,387.18/570,772.13
  6. Step 6: Final answer
    x = 436,237.28

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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.