Home / 738,365.92-1,018,945-398,834.16

Finding the Fourth Proportional to 738,365.92, 1,018,945 and 398,834.16

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Solution

The fourth proportional to 738,365.92, 1,018,945 and 398,834.16 is: 550,391.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,365.92 : 1,018,945 = 398,834.16 : x
  2. Step 2: Convert to fraction form
    738,365.92/1,018,945 = 398,834.16/x
  3. Step 3: Cross multiply
    738,365.92x = 1,018,945 × 398,834.16
  4. Step 4: Simplify right side
    738,365.92x = 406,390,073,161.20
  5. Step 5: Solve for x
    x = 406,390,073,161.20/738,365.92
  6. Step 6: Final answer
    x = 550,391.16

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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.