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Finding the Fourth Proportional to 674,292.39, 930,550.23 and 387,812.13

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Solution

The fourth proportional to 674,292.39, 930,550.23 and 387,812.13 is: 535,196.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,292.39 : 930,550.23 = 387,812.13 : x
  2. Step 2: Convert to fraction form
    674,292.39/930,550.23 = 387,812.13/x
  3. Step 3: Cross multiply
    674,292.39x = 930,550.23 × 387,812.13
  4. Step 4: Simplify right side
    674,292.39x = 360,878,666,768.29
  5. Step 5: Solve for x
    x = 360,878,666,768.29/674,292.39
  6. Step 6: Final answer
    x = 535,196.11

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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.