Home / 718,679,969.80-1,078,019,954.70-288,167,432.20

Finding the Fourth Proportional to 718,679,969.80, 1,078,019,954.70 and 288,167,432.20

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Solution

The fourth proportional to 718,679,969.80, 1,078,019,954.70 and 288,167,432.20 is: 432,251,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,679,969.80 : 1,078,019,954.70 = 288,167,432.20 : x
  2. Step 2: Convert to fraction form
    718,679,969.80/1,078,019,954.70 = 288,167,432.20/x
  3. Step 3: Cross multiply
    718,679,969.80x = 1,078,019,954.70 × 288,167,432.20
  4. Step 4: Simplify right side
    718,679,969.80x = 310,650,242,206,259,328
  5. Step 5: Solve for x
    x = 310,650,242,206,259,328/718,679,969.80
  6. Step 6: Final answer
    x = 432,251,148.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.