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Finding the Fourth Proportional to 963,138.72, 1,329,017.48 and 555,374.52

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Solution

The fourth proportional to 963,138.72, 1,329,017.48 and 555,374.52 is: 766,351.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    963,138.72 : 1,329,017.48 = 555,374.52 : x
  2. Step 2: Convert to fraction form
    963,138.72/1,329,017.48 = 555,374.52/x
  3. Step 3: Cross multiply
    963,138.72x = 1,329,017.48 × 555,374.52
  4. Step 4: Simplify right side
    963,138.72x = 738,102,445,026.61
  5. Step 5: Solve for x
    x = 738,102,445,026.61/963,138.72
  6. Step 6: Final answer
    x = 766,351.13

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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.