Home / 1,490,815,342.33-2,057,417,217.30-821,758,878.21

Finding the Fourth Proportional to 1,490,815,342.33, 2,057,417,217.30 and 821,758,878.21

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Solution

The fourth proportional to 1,490,815,342.33, 2,057,417,217.30 and 821,758,878.21 is: 1,134,077,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,815,342.33 : 2,057,417,217.30 = 821,758,878.21 : x
  2. Step 2: Convert to fraction form
    1,490,815,342.33/2,057,417,217.30 = 821,758,878.21/x
  3. Step 3: Cross multiply
    1,490,815,342.33x = 2,057,417,217.30 × 821,758,878.21
  4. Step 4: Simplify right side
    1,490,815,342.33x = 1,690,700,864,498,387,968
  5. Step 5: Solve for x
    x = 1,690,700,864,498,387,968/1,490,815,342.33
  6. Step 6: Final answer
    x = 1,134,077,988.40

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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.