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Finding the Fourth Proportional to 865,906.30, 1,298,889.15 and 266,862.70

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Solution

The fourth proportional to 865,906.30, 1,298,889.15 and 266,862.70 is: 400,303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,906.30 : 1,298,889.15 = 266,862.70 : x
  2. Step 2: Convert to fraction form
    865,906.30/1,298,889.15 = 266,862.70/x
  3. Step 3: Cross multiply
    865,906.30x = 1,298,889.15 × 266,862.70
  4. Step 4: Simplify right side
    865,906.30x = 346,625,065,569.71
  5. Step 5: Solve for x
    x = 346,625,065,569.71/865,906.30
  6. Step 6: Final answer
    x = 400,303.20

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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.