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Finding the Fourth Proportional to 719,417.12, 992,790.14 and 397,127.46

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Solution

The fourth proportional to 719,417.12, 992,790.14 and 397,127.46 is: 548,032.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,417.12 : 992,790.14 = 397,127.46 : x
  2. Step 2: Convert to fraction form
    719,417.12/992,790.14 = 397,127.46/x
  3. Step 3: Cross multiply
    719,417.12x = 992,790.14 × 397,127.46
  4. Step 4: Simplify right side
    719,417.12x = 394,264,226,611.24
  5. Step 5: Solve for x
    x = 394,264,226,611.24/719,417.12
  6. Step 6: Final answer
    x = 548,032.87

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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.