Home / 880,729.77-1,215,400.23-478,321.77

Finding the Fourth Proportional to 880,729.77, 1,215,400.23 and 478,321.77

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Solution

The fourth proportional to 880,729.77, 1,215,400.23 and 478,321.77 is: 660,080.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,729.77 : 1,215,400.23 = 478,321.77 : x
  2. Step 2: Convert to fraction form
    880,729.77/1,215,400.23 = 478,321.77/x
  3. Step 3: Cross multiply
    880,729.77x = 1,215,400.23 × 478,321.77
  4. Step 4: Simplify right side
    880,729.77x = 581,352,389,272.01
  5. Step 5: Solve for x
    x = 581,352,389,272.01/880,729.77
  6. Step 6: Final answer
    x = 660,080.32

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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.