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Finding the Fourth Proportional to 922,999.20, 1,384,498.80 and 655,310.40

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Solution

The fourth proportional to 922,999.20, 1,384,498.80 and 655,310.40 is: 982,965.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,999.20 : 1,384,498.80 = 655,310.40 : x
  2. Step 2: Convert to fraction form
    922,999.20/1,384,498.80 = 655,310.40/x
  3. Step 3: Cross multiply
    922,999.20x = 1,384,498.80 × 655,310.40
  4. Step 4: Simplify right side
    922,999.20x = 907,276,462,427.52
  5. Step 5: Solve for x
    x = 907,276,462,427.52/922,999.20
  6. Step 6: Final answer
    x = 982,965.60

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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.