Home / 689,449.09-1,034,178.21-240,178.45

Finding the Fourth Proportional to 689,449.09, 1,034,178.21 and 240,178.45

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Solution

The fourth proportional to 689,449.09, 1,034,178.21 and 240,178.45 is: 360,269.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,449.09 : 1,034,178.21 = 240,178.45 : x
  2. Step 2: Convert to fraction form
    689,449.09/1,034,178.21 = 240,178.45/x
  3. Step 3: Cross multiply
    689,449.09x = 1,034,178.21 × 240,178.45
  4. Step 4: Simplify right side
    689,449.09x = 248,387,316,916.13
  5. Step 5: Solve for x
    x = 248,387,316,916.13/689,449.09
  6. Step 6: Final answer
    x = 360,269.27

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1.5x scale

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.