Home / 781,710.76-1,172,635.26-426,572.20

Finding the Fourth Proportional to 781,710.76, 1,172,635.26 and 426,572.20

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Solution

The fourth proportional to 781,710.76, 1,172,635.26 and 426,572.20 is: 639,896.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,710.76 : 1,172,635.26 = 426,572.20 : x
  2. Step 2: Convert to fraction form
    781,710.76/1,172,635.26 = 426,572.20/x
  3. Step 3: Cross multiply
    781,710.76x = 1,172,635.26 × 426,572.20
  4. Step 4: Simplify right side
    781,710.76x = 500,213,602,655.77
  5. Step 5: Solve for x
    x = 500,213,602,655.77/781,710.76
  6. Step 6: Final answer
    x = 639,896.02

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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.