Home / 1,139,513.46-1,708,482.87-499,509.78

Finding the Fourth Proportional to 1,139,513.46, 1,708,482.87 and 499,509.78

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Solution

The fourth proportional to 1,139,513.46, 1,708,482.87 and 499,509.78 is: 748,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,513.46 : 1,708,482.87 = 499,509.78 : x
  2. Step 2: Convert to fraction form
    1,139,513.46/1,708,482.87 = 499,509.78/x
  3. Step 3: Cross multiply
    1,139,513.46x = 1,708,482.87 × 499,509.78
  4. Step 4: Simplify right side
    1,139,513.46x = 853,403,902,527.47
  5. Step 5: Solve for x
    x = 853,403,902,527.47/1,139,513.46
  6. Step 6: Final answer
    x = 748,919.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.