Home / 1,490,815,334.47-2,057,417,206.43-821,758,870.32

Finding the Fourth Proportional to 1,490,815,334.47, 2,057,417,206.43 and 821,758,870.32

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Solution

The fourth proportional to 1,490,815,334.47, 2,057,417,206.43 and 821,758,870.32 is: 1,134,077,977.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,815,334.47 : 2,057,417,206.43 = 821,758,870.32 : x
  2. Step 2: Convert to fraction form
    1,490,815,334.47/2,057,417,206.43 = 821,758,870.32/x
  3. Step 3: Cross multiply
    1,490,815,334.47x = 2,057,417,206.43 × 821,758,870.32
  4. Step 4: Simplify right side
    1,490,815,334.47x = 1,690,700,839,332,847,104
  5. Step 5: Solve for x
    x = 1,690,700,839,332,847,104/1,490,815,334.47
  6. Step 6: Final answer
    x = 1,134,077,977.49

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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.