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Finding the Fourth Proportional to 721,859.40, 996,077.88 and 416,034.72

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Solution

The fourth proportional to 721,859.40, 996,077.88 and 416,034.72 is: 574,077.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,859.40 : 996,077.88 = 416,034.72 : x
  2. Step 2: Convert to fraction form
    721,859.40/996,077.88 = 416,034.72/x
  3. Step 3: Cross multiply
    721,859.40x = 996,077.88 × 416,034.72
  4. Step 4: Simplify right side
    721,859.40x = 414,402,981,903.99
  5. Step 5: Solve for x
    x = 414,402,981,903.99/721,859.40
  6. Step 6: Final answer
    x = 574,077.14

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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.