Home / 738,189.48-1,018,701.48-398,657.76

Finding the Fourth Proportional to 738,189.48, 1,018,701.48 and 398,657.76

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Solution

The fourth proportional to 738,189.48, 1,018,701.48 and 398,657.76 is: 550,147.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,189.48 : 1,018,701.48 = 398,657.76 : x
  2. Step 2: Convert to fraction form
    738,189.48/1,018,701.48 = 398,657.76/x
  3. Step 3: Cross multiply
    738,189.48x = 1,018,701.48 × 398,657.76
  4. Step 4: Simplify right side
    738,189.48x = 406,113,250,125.49
  5. Step 5: Solve for x
    x = 406,113,250,125.49/738,189.48
  6. Step 6: Final answer
    x = 550,147.71

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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.