Home / 709,671.88-1,064,724.36-425,677.78

Finding the Fourth Proportional to 709,671.88, 1,064,724.36 and 425,677.78

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Solution

The fourth proportional to 709,671.88, 1,064,724.36 and 425,677.78 is: 638,646.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,671.88 : 1,064,724.36 = 425,677.78 : x
  2. Step 2: Convert to fraction form
    709,671.88/1,064,724.36 = 425,677.78/x
  3. Step 3: Cross multiply
    709,671.88x = 1,064,724.36 × 425,677.78
  4. Step 4: Simplify right side
    709,671.88x = 453,229,501,876.72
  5. Step 5: Solve for x
    x = 453,229,501,876.72/709,671.88
  6. Step 6: Final answer
    x = 638,646.56

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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.