Home / 718,897.46-992,072.95-396,621.14

Finding the Fourth Proportional to 718,897.46, 992,072.95 and 396,621.14

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Solution

The fourth proportional to 718,897.46, 992,072.95 and 396,621.14 is: 547,334.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,897.46 : 992,072.95 = 396,621.14 : x
  2. Step 2: Convert to fraction form
    718,897.46/992,072.95 = 396,621.14/x
  3. Step 3: Cross multiply
    718,897.46x = 992,072.95 × 396,621.14
  4. Step 4: Simplify right side
    718,897.46x = 393,477,098,440.25
  5. Step 5: Solve for x
    x = 393,477,098,440.25/718,897.46
  6. Step 6: Final answer
    x = 547,334.11

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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.