Home / 913,324.20-1,369,986.30-282,431.40

Finding the Fourth Proportional to 913,324.20, 1,369,986.30 and 282,431.40

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Solution

The fourth proportional to 913,324.20, 1,369,986.30 and 282,431.40 is: 423,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,324.20 : 1,369,986.30 = 282,431.40 : x
  2. Step 2: Convert to fraction form
    913,324.20/1,369,986.30 = 282,431.40/x
  3. Step 3: Cross multiply
    913,324.20x = 1,369,986.30 × 282,431.40
  4. Step 4: Simplify right side
    913,324.20x = 386,927,148,689.82
  5. Step 5: Solve for x
    x = 386,927,148,689.82/913,324.20
  6. Step 6: Final answer
    x = 423,647.10

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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.