Home / 642,225.06-885,867.28-413,080.09

Finding the Fourth Proportional to 642,225.06, 885,867.28 and 413,080.09

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Solution

The fourth proportional to 642,225.06, 885,867.28 and 413,080.09 is: 569,791.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,225.06 : 885,867.28 = 413,080.09 : x
  2. Step 2: Convert to fraction form
    642,225.06/885,867.28 = 413,080.09/x
  3. Step 3: Cross multiply
    642,225.06x = 885,867.28 × 413,080.09
  4. Step 4: Simplify right side
    642,225.06x = 365,934,132,503.09
  5. Step 5: Solve for x
    x = 365,934,132,503.09/642,225.06
  6. Step 6: Final answer
    x = 569,791.11

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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.