Home / 662,074.19-913,588.17-390,124.39

Finding the Fourth Proportional to 662,074.19, 913,588.17 and 390,124.39

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Solution

The fourth proportional to 662,074.19, 913,588.17 and 390,124.39 is: 538,327.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,074.19 : 913,588.17 = 390,124.39 : x
  2. Step 2: Convert to fraction form
    662,074.19/913,588.17 = 390,124.39/x
  3. Step 3: Cross multiply
    662,074.19x = 913,588.17 × 390,124.39
  4. Step 4: Simplify right side
    662,074.19x = 356,413,022,964.53
  5. Step 5: Solve for x
    x = 356,413,022,964.53/662,074.19
  6. Step 6: Final answer
    x = 538,327.92

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Double scale
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Similar ratio
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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.