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Finding the Fourth Proportional to 657,115.10, 985,672.65 and 570,509.90

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Solution

The fourth proportional to 657,115.10, 985,672.65 and 570,509.90 is: 855,764.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,115.10 : 985,672.65 = 570,509.90 : x
  2. Step 2: Convert to fraction form
    657,115.10/985,672.65 = 570,509.90/x
  3. Step 3: Cross multiply
    657,115.10x = 985,672.65 × 570,509.90
  4. Step 4: Simplify right side
    657,115.10x = 562,336,004,984.24
  5. Step 5: Solve for x
    x = 562,336,004,984.24/657,115.10
  6. Step 6: Final answer
    x = 855,764.85

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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.