Home / 1,189,844,746.32-1,642,025,576.28-661,231,012.56

Finding the Fourth Proportional to 1,189,844,746.32, 1,642,025,576.28 and 661,231,012.56

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Solution

The fourth proportional to 1,189,844,746.32, 1,642,025,576.28 and 661,231,012.56 is: 912,520,929.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,844,746.32 : 1,642,025,576.28 = 661,231,012.56 : x
  2. Step 2: Convert to fraction form
    1,189,844,746.32/1,642,025,576.28 = 661,231,012.56/x
  3. Step 3: Cross multiply
    1,189,844,746.32x = 1,642,025,576.28 × 661,231,012.56
  4. Step 4: Simplify right side
    1,189,844,746.32x = 1,085,758,234,453,041,792
  5. Step 5: Solve for x
    x = 1,085,758,234,453,041,792/1,189,844,746.32
  6. Step 6: Final answer
    x = 912,520,929.99

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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.