Home / 809,208,689.28-1,116,707,977.55-437,930,720.66

Finding the Fourth Proportional to 809,208,689.28, 1,116,707,977.55 and 437,930,720.66

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Solution

The fourth proportional to 809,208,689.28, 1,116,707,977.55 and 437,930,720.66 is: 604,344,387.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,208,689.28 : 1,116,707,977.55 = 437,930,720.66 : x
  2. Step 2: Convert to fraction form
    809,208,689.28/1,116,707,977.55 = 437,930,720.66/x
  3. Step 3: Cross multiply
    809,208,689.28x = 1,116,707,977.55 × 437,930,720.66
  4. Step 4: Simplify right side
    809,208,689.28x = 489,040,729,373,510,144
  5. Step 5: Solve for x
    x = 489,040,729,373,510,144/809,208,689.28
  6. Step 6: Final answer
    x = 604,344,387.12

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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.