Home / 491,571,348.16-678,389,069.28-282,727,549.12

Finding the Fourth Proportional to 491,571,348.16, 678,389,069.28 and 282,727,549.12

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Solution

The fourth proportional to 491,571,348.16, 678,389,069.28 and 282,727,549.12 is: 390,175,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,571,348.16 : 678,389,069.28 = 282,727,549.12 : x
  2. Step 2: Convert to fraction form
    491,571,348.16/678,389,069.28 = 282,727,549.12/x
  3. Step 3: Cross multiply
    491,571,348.16x = 678,389,069.28 × 282,727,549.12
  4. Step 4: Simplify right side
    491,571,348.16x = 191,799,278,907,332,288
  5. Step 5: Solve for x
    x = 191,799,278,907,332,288/491,571,348.16
  6. Step 6: Final answer
    x = 390,175,870.96

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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.