Home / 434,503.40-651,755.10-153,984.20

Finding the Fourth Proportional to 434,503.40, 651,755.10 and 153,984.20

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Solution

The fourth proportional to 434,503.40, 651,755.10 and 153,984.20 is: 230,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,503.40 : 651,755.10 = 153,984.20 : x
  2. Step 2: Convert to fraction form
    434,503.40/651,755.10 = 153,984.20/x
  3. Step 3: Cross multiply
    434,503.40x = 651,755.10 × 153,984.20
  4. Step 4: Simplify right side
    434,503.40x = 100,359,987,669.42
  5. Step 5: Solve for x
    x = 100,359,987,669.42/434,503.40
  6. Step 6: Final answer
    x = 230,976.30

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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.