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Finding the Fourth Proportional to 656,886.20, 985,718.10 and 432,894.20

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Solution

The fourth proportional to 656,886.20, 985,718.10 and 432,894.20 is: 649,597.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,886.20 : 985,718.10 = 432,894.20 : x
  2. Step 2: Convert to fraction form
    656,886.20/985,718.10 = 432,894.20/x
  3. Step 3: Cross multiply
    656,886.20x = 985,718.10 × 432,894.20
  4. Step 4: Simplify right side
    656,886.20x = 426,711,648,325.02
  5. Step 5: Solve for x
    x = 426,711,648,325.02/656,886.20
  6. Step 6: Final answer
    x = 649,597.52

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1.5x scale

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.