Home / 874,500,205.30-1,206,810,340.43-478,024,765.38

Finding the Fourth Proportional to 874,500,205.30, 1,206,810,340.43 and 478,024,765.38

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Solution

The fourth proportional to 874,500,205.30, 1,206,810,340.43 and 478,024,765.38 is: 659,674,207.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,500,205.30 : 1,206,810,340.43 = 478,024,765.38 : x
  2. Step 2: Convert to fraction form
    874,500,205.30/1,206,810,340.43 = 478,024,765.38/x
  3. Step 3: Cross multiply
    874,500,205.30x = 1,206,810,340.43 × 478,024,765.38
  4. Step 4: Simplify right side
    874,500,205.30x = 576,885,229,839,818,496
  5. Step 5: Solve for x
    x = 576,885,229,839,818,496/874,500,205.30
  6. Step 6: Final answer
    x = 659,674,207.44

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1.5x scale

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.