Home / 980,180.10-1,470,270.15-644,256.90

Finding the Fourth Proportional to 980,180.10, 1,470,270.15 and 644,256.90

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Solution

The fourth proportional to 980,180.10, 1,470,270.15 and 644,256.90 is: 966,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,180.10 : 1,470,270.15 = 644,256.90 : x
  2. Step 2: Convert to fraction form
    980,180.10/1,470,270.15 = 644,256.90/x
  3. Step 3: Cross multiply
    980,180.10x = 1,470,270.15 × 644,256.90
  4. Step 4: Simplify right side
    980,180.10x = 947,231,689,001.54
  5. Step 5: Solve for x
    x = 947,231,689,001.54/980,180.10
  6. Step 6: Final answer
    x = 966,385.35

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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.