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Finding the Fourth Proportional to 869,641.50, 1,304,446.86 and 357,195.69

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Solution

The fourth proportional to 869,641.50, 1,304,446.86 and 357,195.69 is: 535,787.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,641.50 : 1,304,446.86 = 357,195.69 : x
  2. Step 2: Convert to fraction form
    869,641.50/1,304,446.86 = 357,195.69/x
  3. Step 3: Cross multiply
    869,641.50x = 1,304,446.86 × 357,195.69
  4. Step 4: Simplify right side
    869,641.50x = 465,942,796,226.03
  5. Step 5: Solve for x
    x = 465,942,796,226.03/869,641.50
  6. Step 6: Final answer
    x = 535,787.21

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Double scale
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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.