Home / 778,512.47-1,074,347.35-438,980.72

Finding the Fourth Proportional to 778,512.47, 1,074,347.35 and 438,980.72

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Solution

The fourth proportional to 778,512.47, 1,074,347.35 and 438,980.72 is: 605,793.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,512.47 : 1,074,347.35 = 438,980.72 : x
  2. Step 2: Convert to fraction form
    778,512.47/1,074,347.35 = 438,980.72/x
  3. Step 3: Cross multiply
    778,512.47x = 1,074,347.35 × 438,980.72
  4. Step 4: Simplify right side
    778,512.47x = 471,617,766,763.90
  5. Step 5: Solve for x
    x = 471,617,766,763.90/778,512.47
  6. Step 6: Final answer
    x = 605,793.47

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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.