Home / 891,864.72-1,338,001.53-386,510.55

Finding the Fourth Proportional to 891,864.72, 1,338,001.53 and 386,510.55

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Solution

The fourth proportional to 891,864.72, 1,338,001.53 and 386,510.55 is: 579,854.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,864.72 : 1,338,001.53 = 386,510.55 : x
  2. Step 2: Convert to fraction form
    891,864.72/1,338,001.53 = 386,510.55/x
  3. Step 3: Cross multiply
    891,864.72x = 1,338,001.53 × 386,510.55
  4. Step 4: Simplify right side
    891,864.72x = 517,151,707,261.14
  5. Step 5: Solve for x
    x = 517,151,707,261.14/891,864.72
  6. Step 6: Final answer
    x = 579,854.43

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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.