Home / 990,422.28-1,486,223.64-359,385.30

Finding the Fourth Proportional to 990,422.28, 1,486,223.64 and 359,385.30

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Solution

The fourth proportional to 990,422.28, 1,486,223.64 and 359,385.30 is: 539,292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,422.28 : 1,486,223.64 = 359,385.30 : x
  2. Step 2: Convert to fraction form
    990,422.28/1,486,223.64 = 359,385.30/x
  3. Step 3: Cross multiply
    990,422.28x = 1,486,223.64 × 359,385.30
  4. Step 4: Simplify right side
    990,422.28x = 534,126,928,728.49
  5. Step 5: Solve for x
    x = 534,126,928,728.49/990,422.28
  6. Step 6: Final answer
    x = 539,292.12

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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.