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Finding the Fourth Proportional to 674,295.39, 930,554.37 and 387,815.13

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Solution

The fourth proportional to 674,295.39, 930,554.37 and 387,815.13 is: 535,200.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,295.39 : 930,554.37 = 387,815.13 : x
  2. Step 2: Convert to fraction form
    674,295.39/930,554.37 = 387,815.13/x
  3. Step 3: Cross multiply
    674,295.39x = 930,554.37 × 387,815.13
  4. Step 4: Simplify right side
    674,295.39x = 360,883,063,973.62
  5. Step 5: Solve for x
    x = 360,883,063,973.62/674,295.39
  6. Step 6: Final answer
    x = 535,200.25

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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.