Home / 709,863.80-1,064,795.70-457,921.40

Finding the Fourth Proportional to 709,863.80, 1,064,795.70 and 457,921.40

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Solution

The fourth proportional to 709,863.80, 1,064,795.70 and 457,921.40 is: 686,882.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,863.80 : 1,064,795.70 = 457,921.40 : x
  2. Step 2: Convert to fraction form
    709,863.80/1,064,795.70 = 457,921.40/x
  3. Step 3: Cross multiply
    709,863.80x = 1,064,795.70 × 457,921.40
  4. Step 4: Simplify right side
    709,863.80x = 487,592,737,657.98
  5. Step 5: Solve for x
    x = 487,592,737,657.98/709,863.80
  6. Step 6: Final answer
    x = 686,882.10

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Similar ratio
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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.