Home / 778,721.61-1,074,633.79-434,553.88

Finding the Fourth Proportional to 778,721.61, 1,074,633.79 and 434,553.88

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Solution

The fourth proportional to 778,721.61, 1,074,633.79 and 434,553.88 is: 599,683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,721.61 : 1,074,633.79 = 434,553.88 : x
  2. Step 2: Convert to fraction form
    778,721.61/1,074,633.79 = 434,553.88/x
  3. Step 3: Cross multiply
    778,721.61x = 1,074,633.79 × 434,553.88
  4. Step 4: Simplify right side
    778,721.61x = 466,986,280,850.84
  5. Step 5: Solve for x
    x = 466,986,280,850.84/778,721.61
  6. Step 6: Final answer
    x = 599,683.22

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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.