Home / 778,574.80-1,074,431.28-439,040.62

Finding the Fourth Proportional to 778,574.80, 1,074,431.28 and 439,040.62

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Solution

The fourth proportional to 778,574.80, 1,074,431.28 and 439,040.62 is: 605,874.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,574.80 : 1,074,431.28 = 439,040.62 : x
  2. Step 2: Convert to fraction form
    778,574.80/1,074,431.28 = 439,040.62/x
  3. Step 3: Cross multiply
    778,574.80x = 1,074,431.28 × 439,040.62
  4. Step 4: Simplify right side
    778,574.80x = 471,718,975,318.59
  5. Step 5: Solve for x
    x = 471,718,975,318.59/778,574.80
  6. Step 6: Final answer
    x = 605,874.96

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Double scale
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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.