Home / 1,490,815,331.72-2,057,417,202.62-821,758,867.57

Finding the Fourth Proportional to 1,490,815,331.72, 2,057,417,202.62 and 821,758,867.57

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Solution

The fourth proportional to 1,490,815,331.72, 2,057,417,202.62 and 821,758,867.57 is: 1,134,077,973.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,815,331.72 : 2,057,417,202.62 = 821,758,867.57 : x
  2. Step 2: Convert to fraction form
    1,490,815,331.72/2,057,417,202.62 = 821,758,867.57/x
  3. Step 3: Cross multiply
    1,490,815,331.72x = 2,057,417,202.62 × 821,758,867.57
  4. Step 4: Simplify right side
    1,490,815,331.72x = 1,690,700,830,544,048,384
  5. Step 5: Solve for x
    x = 1,690,700,830,544,048,384/1,490,815,331.72
  6. Step 6: Final answer
    x = 1,134,077,973.69

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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.