Home / 1,107,439.29-1,528,270.34-642,384.68

Finding the Fourth Proportional to 1,107,439.29, 1,528,270.34 and 642,384.68

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Solution

The fourth proportional to 1,107,439.29, 1,528,270.34 and 642,384.68 is: 886,493.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,439.29 : 1,528,270.34 = 642,384.68 : x
  2. Step 2: Convert to fraction form
    1,107,439.29/1,528,270.34 = 642,384.68/x
  3. Step 3: Cross multiply
    1,107,439.29x = 1,528,270.34 × 642,384.68
  4. Step 4: Simplify right side
    1,107,439.29x = 981,737,442,461.12
  5. Step 5: Solve for x
    x = 981,737,442,461.12/1,107,439.29
  6. Step 6: Final answer
    x = 886,493.24

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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.