Home / 778,902.20-1,168,353.30-478,408.40

Finding the Fourth Proportional to 778,902.20, 1,168,353.30 and 478,408.40

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Solution

The fourth proportional to 778,902.20, 1,168,353.30 and 478,408.40 is: 717,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,902.20 : 1,168,353.30 = 478,408.40 : x
  2. Step 2: Convert to fraction form
    778,902.20/1,168,353.30 = 478,408.40/x
  3. Step 3: Cross multiply
    778,902.20x = 1,168,353.30 × 478,408.40
  4. Step 4: Simplify right side
    778,902.20x = 558,950,032,887.72
  5. Step 5: Solve for x
    x = 558,950,032,887.72/778,902.20
  6. Step 6: Final answer
    x = 717,612.60

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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.