Home / 913,209.64-1,370,139.18-407,725

Finding the Fourth Proportional to 913,209.64, 1,370,139.18 and 407,725

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Solution

The fourth proportional to 913,209.64, 1,370,139.18 and 407,725 is: 611,732.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,209.64 : 1,370,139.18 = 407,725 : x
  2. Step 2: Convert to fraction form
    913,209.64/1,370,139.18 = 407,725/x
  3. Step 3: Cross multiply
    913,209.64x = 1,370,139.18 × 407,725
  4. Step 4: Simplify right side
    913,209.64x = 558,639,997,165.50
  5. Step 5: Solve for x
    x = 558,639,997,165.50/913,209.64
  6. Step 6: Final answer
    x = 611,732.48

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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.