Home / 905,590.78-1,249,664.40-542,833.12

Finding the Fourth Proportional to 905,590.78, 1,249,664.40 and 542,833.12

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Solution

The fourth proportional to 905,590.78, 1,249,664.40 and 542,833.12 is: 749,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,590.78 : 1,249,664.40 = 542,833.12 : x
  2. Step 2: Convert to fraction form
    905,590.78/1,249,664.40 = 542,833.12/x
  3. Step 3: Cross multiply
    905,590.78x = 1,249,664.40 × 542,833.12
  4. Step 4: Simplify right side
    905,590.78x = 678,359,225,204.93
  5. Step 5: Solve for x
    x = 678,359,225,204.93/905,590.78
  6. Step 6: Final answer
    x = 749,079.21

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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.