Home / 738,180.05-1,018,688.49-398,648.30

Finding the Fourth Proportional to 738,180.05, 1,018,688.49 and 398,648.30

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Solution

The fourth proportional to 738,180.05, 1,018,688.49 and 398,648.30 is: 550,134.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,180.05 : 1,018,688.49 = 398,648.30 : x
  2. Step 2: Convert to fraction form
    738,180.05/1,018,688.49 = 398,648.30/x
  3. Step 3: Cross multiply
    738,180.05x = 1,018,688.49 × 398,648.30
  4. Step 4: Simplify right side
    738,180.05x = 406,098,429,674.63
  5. Step 5: Solve for x
    x = 406,098,429,674.63/738,180.05
  6. Step 6: Final answer
    x = 550,134.66

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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.