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Finding the Fourth Proportional to 660,103.20, 992,268.90 and 613,301.40

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Solution

The fourth proportional to 660,103.20, 992,268.90 and 613,301.40 is: 921,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,103.20 : 992,268.90 = 613,301.40 : x
  2. Step 2: Convert to fraction form
    660,103.20/992,268.90 = 613,301.40/x
  3. Step 3: Cross multiply
    660,103.20x = 992,268.90 × 613,301.40
  4. Step 4: Simplify right side
    660,103.20x = 608,559,905,546.46
  5. Step 5: Solve for x
    x = 608,559,905,546.46/660,103.20
  6. Step 6: Final answer
    x = 921,916.31

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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.