Home / 778,860.20-1,168,290.30-405,612.20

Finding the Fourth Proportional to 778,860.20, 1,168,290.30 and 405,612.20

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Solution

The fourth proportional to 778,860.20, 1,168,290.30 and 405,612.20 is: 608,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,860.20 : 1,168,290.30 = 405,612.20 : x
  2. Step 2: Convert to fraction form
    778,860.20/1,168,290.30 = 405,612.20/x
  3. Step 3: Cross multiply
    778,860.20x = 1,168,290.30 × 405,612.20
  4. Step 4: Simplify right side
    778,860.20x = 473,872,798,821.66
  5. Step 5: Solve for x
    x = 473,872,798,821.66/778,860.20
  6. Step 6: Final answer
    x = 608,418.30

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Double scale
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Similar ratio
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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.