Home / 648,016.20-972,024.30-630,520.20

Finding the Fourth Proportional to 648,016.20, 972,024.30 and 630,520.20

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Solution

The fourth proportional to 648,016.20, 972,024.30 and 630,520.20 is: 945,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,016.20 : 972,024.30 = 630,520.20 : x
  2. Step 2: Convert to fraction form
    648,016.20/972,024.30 = 630,520.20/x
  3. Step 3: Cross multiply
    648,016.20x = 972,024.30 × 630,520.20
  4. Step 4: Simplify right side
    648,016.20x = 612,880,956,040.86
  5. Step 5: Solve for x
    x = 612,880,956,040.86/648,016.20
  6. Step 6: Final answer
    x = 945,780.30

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Half scale
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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.