Home / 738,309.14-1,018,867.31-398,777.39

Finding the Fourth Proportional to 738,309.14, 1,018,867.31 and 398,777.39

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Solution

The fourth proportional to 738,309.14, 1,018,867.31 and 398,777.39 is: 550,313.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,309.14 : 1,018,867.31 = 398,777.39 : x
  2. Step 2: Convert to fraction form
    738,309.14/1,018,867.31 = 398,777.39/x
  3. Step 3: Cross multiply
    738,309.14x = 1,018,867.31 × 398,777.39
  4. Step 4: Simplify right side
    738,309.14x = 406,301,239,549.90
  5. Step 5: Solve for x
    x = 406,301,239,549.90/738,309.14
  6. Step 6: Final answer
    x = 550,313.17

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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.