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Finding the Fourth Proportional to 710,681.06, 980,787.15 and 400,660.11

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Solution

The fourth proportional to 710,681.06, 980,787.15 and 400,660.11 is: 552,937.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,681.06 : 980,787.15 = 400,660.11 : x
  2. Step 2: Convert to fraction form
    710,681.06/980,787.15 = 400,660.11/x
  3. Step 3: Cross multiply
    710,681.06x = 980,787.15 × 400,660.11
  4. Step 4: Simplify right side
    710,681.06x = 392,962,287,405.59
  5. Step 5: Solve for x
    x = 392,962,287,405.59/710,681.06
  6. Step 6: Final answer
    x = 552,937.61

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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.