Home / 642,173.28-885,961.20-415,943.52

Finding the Fourth Proportional to 642,173.28, 885,961.20 and 415,943.52

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Solution

The fourth proportional to 642,173.28, 885,961.20 and 415,943.52 is: 573,847.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,173.28 : 885,961.20 = 415,943.52 : x
  2. Step 2: Convert to fraction form
    642,173.28/885,961.20 = 415,943.52/x
  3. Step 3: Cross multiply
    642,173.28x = 885,961.20 × 415,943.52
  4. Step 4: Simplify right side
    642,173.28x = 368,509,820,111.42
  5. Step 5: Solve for x
    x = 368,509,820,111.42/642,173.28
  6. Step 6: Final answer
    x = 573,847.95

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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.