Home / 778,431.60-1,167,647.40-512,492.40

Finding the Fourth Proportional to 778,431.60, 1,167,647.40 and 512,492.40

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Solution

The fourth proportional to 778,431.60, 1,167,647.40 and 512,492.40 is: 768,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,431.60 : 1,167,647.40 = 512,492.40 : x
  2. Step 2: Convert to fraction form
    778,431.60/1,167,647.40 = 512,492.40/x
  3. Step 3: Cross multiply
    778,431.60x = 1,167,647.40 × 512,492.40
  4. Step 4: Simplify right side
    778,431.60x = 598,410,418,379.76
  5. Step 5: Solve for x
    x = 598,410,418,379.76/778,431.60
  6. Step 6: Final answer
    x = 768,738.60

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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.