Home / 905,489.22-1,249,302.63-542,780.73

Finding the Fourth Proportional to 905,489.22, 1,249,302.63 and 542,780.73

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Solution

The fourth proportional to 905,489.22, 1,249,302.63 and 542,780.73 is: 748,874.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,489.22 : 1,249,302.63 = 542,780.73 : x
  2. Step 2: Convert to fraction form
    905,489.22/1,249,302.63 = 542,780.73/x
  3. Step 3: Cross multiply
    905,489.22x = 1,249,302.63 × 542,780.73
  4. Step 4: Simplify right side
    905,489.22x = 678,097,393,502.32
  5. Step 5: Solve for x
    x = 678,097,393,502.32/905,489.22
  6. Step 6: Final answer
    x = 748,874.07

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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.