Home / 905,489.85-1,249,303.49-542,781.37

Finding the Fourth Proportional to 905,489.85, 1,249,303.49 and 542,781.37

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Solution

The fourth proportional to 905,489.85, 1,249,303.49 and 542,781.37 is: 748,874.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,489.85 : 1,249,303.49 = 542,781.37 : x
  2. Step 2: Convert to fraction form
    905,489.85/1,249,303.49 = 542,781.37/x
  3. Step 3: Cross multiply
    905,489.85x = 1,249,303.49 × 542,781.37
  4. Step 4: Simplify right side
    905,489.85x = 678,098,653,601.46
  5. Step 5: Solve for x
    x = 678,098,653,601.46/905,489.85
  6. Step 6: Final answer
    x = 748,874.94

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1.5x scale

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.