Home / 913,419.40-1,370,129.10-282,332.20

Finding the Fourth Proportional to 913,419.40, 1,370,129.10 and 282,332.20

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Solution

The fourth proportional to 913,419.40, 1,370,129.10 and 282,332.20 is: 423,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,419.40 : 1,370,129.10 = 282,332.20 : x
  2. Step 2: Convert to fraction form
    913,419.40/1,370,129.10 = 282,332.20/x
  3. Step 3: Cross multiply
    913,419.40x = 1,370,129.10 × 282,332.20
  4. Step 4: Simplify right side
    913,419.40x = 386,831,563,087.02
  5. Step 5: Solve for x
    x = 386,831,563,087.02/913,419.40
  6. Step 6: Final answer
    x = 423,498.30

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Half scale
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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.