Home / 808,640,882.10-1,212,961,323.15-776,896,139.70

Finding the Fourth Proportional to 808,640,882.10, 1,212,961,323.15 and 776,896,139.70

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Solution

The fourth proportional to 808,640,882.10, 1,212,961,323.15 and 776,896,139.70 is: 1,165,344,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,640,882.10 : 1,212,961,323.15 = 776,896,139.70 : x
  2. Step 2: Convert to fraction form
    808,640,882.10/1,212,961,323.15 = 776,896,139.70/x
  3. Step 3: Cross multiply
    808,640,882.10x = 1,212,961,323.15 × 776,896,139.70
  4. Step 4: Simplify right side
    808,640,882.10x = 942,344,969,560,639,360
  5. Step 5: Solve for x
    x = 942,344,969,560,639,360/808,640,882.10
  6. Step 6: Final answer
    x = 1,165,344,209.55

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1.5x scale

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.