Home / 778,392.72-1,074,128.04-438,788.88

Finding the Fourth Proportional to 778,392.72, 1,074,128.04 and 438,788.88

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Solution

The fourth proportional to 778,392.72, 1,074,128.04 and 438,788.88 is: 605,498.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,392.72 : 1,074,128.04 = 438,788.88 : x
  2. Step 2: Convert to fraction form
    778,392.72/1,074,128.04 = 438,788.88/x
  3. Step 3: Cross multiply
    778,392.72x = 1,074,128.04 × 438,788.88
  4. Step 4: Simplify right side
    778,392.72x = 471,315,439,648.20
  5. Step 5: Solve for x
    x = 471,315,439,648.20/778,392.72
  6. Step 6: Final answer
    x = 605,498.26

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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.