Home / 1,289,442,891.90-1,929,700,233.45-772,244,510.70

Finding the Fourth Proportional to 1,289,442,891.90, 1,929,700,233.45 and 772,244,510.70

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Solution

The fourth proportional to 1,289,442,891.90, 1,929,700,233.45 and 772,244,510.70 is: 1,155,693,223.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,442,891.90 : 1,929,700,233.45 = 772,244,510.70 : x
  2. Step 2: Convert to fraction form
    1,289,442,891.90/1,929,700,233.45 = 772,244,510.70/x
  3. Step 3: Cross multiply
    1,289,442,891.90x = 1,929,700,233.45 × 772,244,510.70
  4. Step 4: Simplify right side
    1,289,442,891.90x = 1,490,200,412,578,271,232
  5. Step 5: Solve for x
    x = 1,490,200,412,578,271,232/1,289,442,891.90
  6. Step 6: Final answer
    x = 1,155,693,223.75

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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.