Home / 1,312,711,819.53-1,811,149,028.82-755,780,547.21

Finding the Fourth Proportional to 1,312,711,819.53, 1,811,149,028.82 and 755,780,547.21

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Solution

The fourth proportional to 1,312,711,819.53, 1,811,149,028.82 and 755,780,547.21 is: 1,042,750,726.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,711,819.53 : 1,811,149,028.82 = 755,780,547.21 : x
  2. Step 2: Convert to fraction form
    1,312,711,819.53/1,811,149,028.82 = 755,780,547.21/x
  3. Step 3: Cross multiply
    1,312,711,819.53x = 1,811,149,028.82 × 755,780,547.21
  4. Step 4: Simplify right side
    1,312,711,819.53x = 1,368,831,204,080,439,552
  5. Step 5: Solve for x
    x = 1,368,831,204,080,439,552/1,312,711,819.53
  6. Step 6: Final answer
    x = 1,042,750,726.94

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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.