Home / 990,155.81-1,366,379.66-560,426.72

Finding the Fourth Proportional to 990,155.81, 1,366,379.66 and 560,426.72

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Solution

The fourth proportional to 990,155.81, 1,366,379.66 and 560,426.72 is: 773,368.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,155.81 : 1,366,379.66 = 560,426.72 : x
  2. Step 2: Convert to fraction form
    990,155.81/1,366,379.66 = 560,426.72/x
  3. Step 3: Cross multiply
    990,155.81x = 1,366,379.66 × 560,426.72
  4. Step 4: Simplify right side
    990,155.81x = 765,755,665,697.68
  5. Step 5: Solve for x
    x = 765,755,665,697.68/990,155.81
  6. Step 6: Final answer
    x = 773,368.85

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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.