Home / 865,402.70-1,298,104.05-492,154.70

Finding the Fourth Proportional to 865,402.70, 1,298,104.05 and 492,154.70

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Solution

The fourth proportional to 865,402.70, 1,298,104.05 and 492,154.70 is: 738,232.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,402.70 : 1,298,104.05 = 492,154.70 : x
  2. Step 2: Convert to fraction form
    865,402.70/1,298,104.05 = 492,154.70/x
  3. Step 3: Cross multiply
    865,402.70x = 1,298,104.05 × 492,154.70
  4. Step 4: Simplify right side
    865,402.70x = 638,868,009,296.54
  5. Step 5: Solve for x
    x = 638,868,009,296.54/865,402.70
  6. Step 6: Final answer
    x = 738,232.05

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.