Home / 863,542.40-1,294,147.20-578,422.40

Finding the Fourth Proportional to 863,542.40, 1,294,147.20 and 578,422.40

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Solution

The fourth proportional to 863,542.40, 1,294,147.20 and 578,422.40 is: 866,852.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,542.40 : 1,294,147.20 = 578,422.40 : x
  2. Step 2: Convert to fraction form
    863,542.40/1,294,147.20 = 578,422.40/x
  3. Step 3: Cross multiply
    863,542.40x = 1,294,147.20 × 578,422.40
  4. Step 4: Simplify right side
    863,542.40x = 748,563,729,377.28
  5. Step 5: Solve for x
    x = 748,563,729,377.28/863,542.40
  6. Step 6: Final answer
    x = 866,852.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.