Home / 851,459.28-1,276,002.72-430,243.44

Finding the Fourth Proportional to 851,459.28, 1,276,002.72 and 430,243.44

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Solution

The fourth proportional to 851,459.28, 1,276,002.72 and 430,243.44 is: 644,765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,459.28 : 1,276,002.72 = 430,243.44 : x
  2. Step 2: Convert to fraction form
    851,459.28/1,276,002.72 = 430,243.44/x
  3. Step 3: Cross multiply
    851,459.28x = 1,276,002.72 × 430,243.44
  4. Step 4: Simplify right side
    851,459.28x = 548,991,799,702.16
  5. Step 5: Solve for x
    x = 548,991,799,702.16/851,459.28
  6. Step 6: Final answer
    x = 644,765.77

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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.