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Finding the Fourth Proportional to 709,843.80, 1,064,765.70 and 457,901.40

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Solution

The fourth proportional to 709,843.80, 1,064,765.70 and 457,901.40 is: 686,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,843.80 : 1,064,765.70 = 457,901.40 : x
  2. Step 2: Convert to fraction form
    709,843.80/1,064,765.70 = 457,901.40/x
  3. Step 3: Cross multiply
    709,843.80x = 1,064,765.70 × 457,901.40
  4. Step 4: Simplify right side
    709,843.80x = 487,557,704,701.98
  5. Step 5: Solve for x
    x = 487,557,704,701.98/709,843.80
  6. Step 6: Final answer
    x = 686,852.10

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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.