Home / 1,315,080,865.17-1,814,123,549.73-813,129,194.55

Finding the Fourth Proportional to 1,315,080,865.17, 1,814,123,549.73 and 813,129,194.55

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Solution

The fourth proportional to 1,315,080,865.17, 1,814,123,549.73 and 813,129,194.55 is: 1,121,692,863.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,080,865.17 : 1,814,123,549.73 = 813,129,194.55 : x
  2. Step 2: Convert to fraction form
    1,315,080,865.17/1,814,123,549.73 = 813,129,194.55/x
  3. Step 3: Cross multiply
    1,315,080,865.17x = 1,814,123,549.73 × 813,129,194.55
  4. Step 4: Simplify right side
    1,315,080,865.17x = 1,475,116,820,806,141,696
  5. Step 5: Solve for x
    x = 1,475,116,820,806,141,696/1,315,080,865.17
  6. Step 6: Final answer
    x = 1,121,692,863.06

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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.