Home / 1,157,674,319.12-1,736,687,838.36-720,621,439.76

Finding the Fourth Proportional to 1,157,674,319.12, 1,736,687,838.36 and 720,621,439.76

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Solution

The fourth proportional to 1,157,674,319.12, 1,736,687,838.36 and 720,621,439.76 is: 1,081,041,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157,674,319.12 : 1,736,687,838.36 = 720,621,439.76 : x
  2. Step 2: Convert to fraction form
    1,157,674,319.12/1,736,687,838.36 = 720,621,439.76/x
  3. Step 3: Cross multiply
    1,157,674,319.12x = 1,736,687,838.36 × 720,621,439.76
  4. Step 4: Simplify right side
    1,157,674,319.12x = 1,251,494,490,492,665,344
  5. Step 5: Solve for x
    x = 1,251,494,490,492,665,344/1,157,674,319.12
  6. Step 6: Final answer
    x = 1,081,041,938.85

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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.