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Finding the Fourth Proportional to 674,153.28, 930,299.04 and 372,340.80

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Solution

The fourth proportional to 674,153.28, 930,299.04 and 372,340.80 is: 513,812.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,153.28 : 930,299.04 = 372,340.80 : x
  2. Step 2: Convert to fraction form
    674,153.28/930,299.04 = 372,340.80/x
  3. Step 3: Cross multiply
    674,153.28x = 930,299.04 × 372,340.80
  4. Step 4: Simplify right side
    674,153.28x = 346,388,288,792.83
  5. Step 5: Solve for x
    x = 346,388,288,792.83/674,153.28
  6. Step 6: Final answer
    x = 513,812.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.