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Finding the Fourth Proportional to 999,003.80, 1,498,505.70 and 992,005.40

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Solution

The fourth proportional to 999,003.80, 1,498,505.70 and 992,005.40 is: 1,488,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,003.80 : 1,498,505.70 = 992,005.40 : x
  2. Step 2: Convert to fraction form
    999,003.80/1,498,505.70 = 992,005.40/x
  3. Step 3: Cross multiply
    999,003.80x = 1,498,505.70 × 992,005.40
  4. Step 4: Simplify right side
    999,003.80x = 1,486,525,746,330.78
  5. Step 5: Solve for x
    x = 1,486,525,746,330.78/999,003.80
  6. Step 6: Final answer
    x = 1,488,008.10

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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.