Home / 758,729.90-1,046,608.89-486,701.12

Finding the Fourth Proportional to 758,729.90, 1,046,608.89 and 486,701.12

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Solution

The fourth proportional to 758,729.90, 1,046,608.89 and 486,701.12 is: 671,366.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,729.90 : 1,046,608.89 = 486,701.12 : x
  2. Step 2: Convert to fraction form
    758,729.90/1,046,608.89 = 486,701.12/x
  3. Step 3: Cross multiply
    758,729.90x = 1,046,608.89 × 486,701.12
  4. Step 4: Simplify right side
    758,729.90x = 509,385,718,964.96
  5. Step 5: Solve for x
    x = 509,385,718,964.96/758,729.90
  6. Step 6: Final answer
    x = 671,366.34

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Double scale
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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.