Home / 860,147.10-1,290,220.65-299,181.60

Finding the Fourth Proportional to 860,147.10, 1,290,220.65 and 299,181.60

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Solution

The fourth proportional to 860,147.10, 1,290,220.65 and 299,181.60 is: 448,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,147.10 : 1,290,220.65 = 299,181.60 : x
  2. Step 2: Convert to fraction form
    860,147.10/1,290,220.65 = 299,181.60/x
  3. Step 3: Cross multiply
    860,147.10x = 1,290,220.65 × 299,181.60
  4. Step 4: Simplify right side
    860,147.10x = 386,010,278,420.04
  5. Step 5: Solve for x
    x = 386,010,278,420.04/860,147.10
  6. Step 6: Final answer
    x = 448,772.40

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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.