Home / 738,189.57-1,018,701.51-398,657.82

Finding the Fourth Proportional to 738,189.57, 1,018,701.51 and 398,657.82

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Solution

The fourth proportional to 738,189.57, 1,018,701.51 and 398,657.82 is: 550,147.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,189.57 : 1,018,701.51 = 398,657.82 : x
  2. Step 2: Convert to fraction form
    738,189.57/1,018,701.51 = 398,657.82/x
  3. Step 3: Cross multiply
    738,189.57x = 1,018,701.51 × 398,657.82
  4. Step 4: Simplify right side
    738,189.57x = 406,113,323,207.31
  5. Step 5: Solve for x
    x = 406,113,323,207.31/738,189.57
  6. Step 6: Final answer
    x = 550,147.74

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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.