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Finding the Fourth Proportional to 765,641.84, 1,148,704.13 and 360,817.70

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Solution

The fourth proportional to 765,641.84, 1,148,704.13 and 360,817.70 is: 541,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,641.84 : 1,148,704.13 = 360,817.70 : x
  2. Step 2: Convert to fraction form
    765,641.84/1,148,704.13 = 360,817.70/x
  3. Step 3: Cross multiply
    765,641.84x = 1,148,704.13 × 360,817.70
  4. Step 4: Simplify right side
    765,641.84x = 414,472,780,363.01
  5. Step 5: Solve for x
    x = 414,472,780,363.01/765,641.84
  6. Step 6: Final answer
    x = 541,340.30

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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.