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Finding the Fourth Proportional to 922,999.70, 1,384,499.55 and 655,310.90

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Solution

The fourth proportional to 922,999.70, 1,384,499.55 and 655,310.90 is: 982,966.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,999.70 : 1,384,499.55 = 655,310.90 : x
  2. Step 2: Convert to fraction form
    922,999.70/1,384,499.55 = 655,310.90/x
  3. Step 3: Cross multiply
    922,999.70x = 1,384,499.55 × 655,310.90
  4. Step 4: Simplify right side
    922,999.70x = 907,277,646,160.10
  5. Step 5: Solve for x
    x = 907,277,646,160.10/922,999.70
  6. Step 6: Final answer
    x = 982,966.35

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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.