Home / 738,347.91-1,018,920.26-398,816.16

Finding the Fourth Proportional to 738,347.91, 1,018,920.26 and 398,816.16

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Solution

The fourth proportional to 738,347.91, 1,018,920.26 and 398,816.16 is: 550,366.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,347.91 : 1,018,920.26 = 398,816.16 : x
  2. Step 2: Convert to fraction form
    738,347.91/1,018,920.26 = 398,816.16/x
  3. Step 3: Cross multiply
    738,347.91x = 1,018,920.26 × 398,816.16
  4. Step 4: Simplify right side
    738,347.91x = 406,361,862,615.49
  5. Step 5: Solve for x
    x = 406,361,862,615.49/738,347.91
  6. Step 6: Final answer
    x = 550,366.38

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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.