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Finding the Fourth Proportional to 1,407,979.74, 1,943,115.03 and 804,354.78

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Solution

The fourth proportional to 1,407,979.74, 1,943,115.03 and 804,354.78 is: 1,110,068.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407,979.74 : 1,943,115.03 = 804,354.78 : x
  2. Step 2: Convert to fraction form
    1,407,979.74/1,943,115.03 = 804,354.78/x
  3. Step 3: Cross multiply
    1,407,979.74x = 1,943,115.03 × 804,354.78
  4. Step 4: Simplify right side
    1,407,979.74x = 1,562,953,862,470.34
  5. Step 5: Solve for x
    x = 1,562,953,862,470.34/1,407,979.74
  6. Step 6: Final answer
    x = 1,110,068.43

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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.