Home / 738,173.98-1,018,680.06-398,642.20

Finding the Fourth Proportional to 738,173.98, 1,018,680.06 and 398,642.20

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Solution

The fourth proportional to 738,173.98, 1,018,680.06 and 398,642.20 is: 550,126.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,173.98 : 1,018,680.06 = 398,642.20 : x
  2. Step 2: Convert to fraction form
    738,173.98/1,018,680.06 = 398,642.20/x
  3. Step 3: Cross multiply
    738,173.98x = 1,018,680.06 × 398,642.20
  4. Step 4: Simplify right side
    738,173.98x = 406,088,860,214.53
  5. Step 5: Solve for x
    x = 406,088,860,214.53/738,173.98
  6. Step 6: Final answer
    x = 550,126.22

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Double scale
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Similar ratio
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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.