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Finding the Fourth Proportional to 646,261, 891,259.56 and 404,565.58

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Solution

The fourth proportional to 646,261, 891,259.56 and 404,565.58 is: 557,937.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,261 : 891,259.56 = 404,565.58 : x
  2. Step 2: Convert to fraction form
    646,261/891,259.56 = 404,565.58/x
  3. Step 3: Cross multiply
    646,261x = 891,259.56 × 404,565.58
  4. Step 4: Simplify right side
    646,261x = 360,572,940,821.95
  5. Step 5: Solve for x
    x = 360,572,940,821.95/646,261
  6. Step 6: Final answer
    x = 557,937.03

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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.