Home / 642,279.48-886,440.08-370,294.21

Finding the Fourth Proportional to 642,279.48, 886,440.08 and 370,294.21

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Solution

The fourth proportional to 642,279.48, 886,440.08 and 370,294.21 is: 511,060.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,279.48 : 886,440.08 = 370,294.21 : x
  2. Step 2: Convert to fraction form
    642,279.48/886,440.08 = 370,294.21/x
  3. Step 3: Cross multiply
    642,279.48x = 886,440.08 × 370,294.21
  4. Step 4: Simplify right side
    642,279.48x = 328,243,627,635.16
  5. Step 5: Solve for x
    x = 328,243,627,635.16/642,279.48
  6. Step 6: Final answer
    x = 511,060.43

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Double scale
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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.