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Finding the Fourth Proportional to 1,359,816.88, 1,876,582.64 and 747,985.40

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Solution

The fourth proportional to 1,359,816.88, 1,876,582.64 and 747,985.40 is: 1,032,239.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359,816.88 : 1,876,582.64 = 747,985.40 : x
  2. Step 2: Convert to fraction form
    1,359,816.88/1,876,582.64 = 747,985.40/x
  3. Step 3: Cross multiply
    1,359,816.88x = 1,876,582.64 × 747,985.40
  4. Step 4: Simplify right side
    1,359,816.88x = 1,403,656,416,613.46
  5. Step 5: Solve for x
    x = 1,403,656,416,613.46/1,359,816.88
  6. Step 6: Final answer
    x = 1,032,239.29

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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.