Home / 738,177.57-1,018,684.95-398,645.82

Finding the Fourth Proportional to 738,177.57, 1,018,684.95 and 398,645.82

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Solution

The fourth proportional to 738,177.57, 1,018,684.95 and 398,645.82 is: 550,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,177.57 : 1,018,684.95 = 398,645.82 : x
  2. Step 2: Convert to fraction form
    738,177.57/1,018,684.95 = 398,645.82/x
  3. Step 3: Cross multiply
    738,177.57x = 1,018,684.95 × 398,645.82
  4. Step 4: Simplify right side
    738,177.57x = 406,094,497,214.41
  5. Step 5: Solve for x
    x = 406,094,497,214.41/738,177.57
  6. Step 6: Final answer
    x = 550,131.18

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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.