Home / 3,119,180.10-4,678,770.15-989,430.90

Finding the Fourth Proportional to 3,119,180.10, 4,678,770.15 and 989,430.90

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Solution

The fourth proportional to 3,119,180.10, 4,678,770.15 and 989,430.90 is: 1,484,146.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,180.10 : 4,678,770.15 = 989,430.90 : x
  2. Step 2: Convert to fraction form
    3,119,180.10/4,678,770.15 = 989,430.90/x
  3. Step 3: Cross multiply
    3,119,180.10x = 4,678,770.15 × 989,430.90
  4. Step 4: Simplify right side
    3,119,180.10x = 4,629,319,760,407.64
  5. Step 5: Solve for x
    x = 4,629,319,760,407.64/3,119,180.10
  6. Step 6: Final answer
    x = 1,484,146.35

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Double scale
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Similar ratio
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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.