Home / 758,943.53-1,139,185.61-380,135.69

Finding the Fourth Proportional to 758,943.53, 1,139,185.61 and 380,135.69

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Solution

The fourth proportional to 758,943.53, 1,139,185.61 and 380,135.69 is: 570,589.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,943.53 : 1,139,185.61 = 380,135.69 : x
  2. Step 2: Convert to fraction form
    758,943.53/1,139,185.61 = 380,135.69/x
  3. Step 3: Cross multiply
    758,943.53x = 1,139,185.61 × 380,135.69
  4. Step 4: Simplify right side
    758,943.53x = 433,045,100,298.81
  5. Step 5: Solve for x
    x = 433,045,100,298.81/758,943.53
  6. Step 6: Final answer
    x = 570,589.36

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Double scale
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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.