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Finding the Fourth Proportional to 985,398.84, 1,359,897.03 and 555,669.72

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Solution

The fourth proportional to 985,398.84, 1,359,897.03 and 555,669.72 is: 766,850.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,398.84 : 1,359,897.03 = 555,669.72 : x
  2. Step 2: Convert to fraction form
    985,398.84/1,359,897.03 = 555,669.72/x
  3. Step 3: Cross multiply
    985,398.84x = 1,359,897.03 × 555,669.72
  4. Step 4: Simplify right side
    985,398.84x = 755,653,601,888.93
  5. Step 5: Solve for x
    x = 755,653,601,888.93/985,398.84
  6. Step 6: Final answer
    x = 766,850.51

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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.