Home / 742,422.36-1,024,543.51-402,890.61

Finding the Fourth Proportional to 742,422.36, 1,024,543.51 and 402,890.61

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Solution

The fourth proportional to 742,422.36, 1,024,543.51 and 402,890.61 is: 555,989.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,422.36 : 1,024,543.51 = 402,890.61 : x
  2. Step 2: Convert to fraction form
    742,422.36/1,024,543.51 = 402,890.61/x
  3. Step 3: Cross multiply
    742,422.36x = 1,024,543.51 × 402,890.61
  4. Step 4: Simplify right side
    742,422.36x = 412,778,957,920.33
  5. Step 5: Solve for x
    x = 412,778,957,920.33/742,422.36
  6. Step 6: Final answer
    x = 555,989.40

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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.