Home / 1,315,081,030.68-1,814,123,775.96-813,129,359.64

Finding the Fourth Proportional to 1,315,081,030.68, 1,814,123,775.96 and 813,129,359.64

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Solution

The fourth proportional to 1,315,081,030.68, 1,814,123,775.96 and 813,129,359.64 is: 1,121,693,089.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,081,030.68 : 1,814,123,775.96 = 813,129,359.64 : x
  2. Step 2: Convert to fraction form
    1,315,081,030.68/1,814,123,775.96 = 813,129,359.64/x
  3. Step 3: Cross multiply
    1,315,081,030.68x = 1,814,123,775.96 × 813,129,359.64
  4. Step 4: Simplify right side
    1,315,081,030.68x = 1,475,117,304,254,053,632
  5. Step 5: Solve for x
    x = 1,475,117,304,254,053,632/1,315,081,030.68
  6. Step 6: Final answer
    x = 1,121,693,089.51

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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.