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Finding the Fourth Proportional to 875,125.10, 1,207,672.65 and 472,717.10

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Solution

The fourth proportional to 875,125.10, 1,207,672.65 and 472,717.10 is: 652,349.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,125.10 : 1,207,672.65 = 472,717.10 : x
  2. Step 2: Convert to fraction form
    875,125.10/1,207,672.65 = 472,717.10/x
  3. Step 3: Cross multiply
    875,125.10x = 1,207,672.65 × 472,717.10
  4. Step 4: Simplify right side
    875,125.10x = 570,887,506,818.95
  5. Step 5: Solve for x
    x = 570,887,506,818.95/875,125.10
  6. Step 6: Final answer
    x = 652,349.60

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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.