Home / 420,052,427.10-630,078,640.65-113,344,047.90

Finding the Fourth Proportional to 420,052,427.10, 630,078,640.65 and 113,344,047.90

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Solution

The fourth proportional to 420,052,427.10, 630,078,640.65 and 113,344,047.90 is: 170,016,071.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,052,427.10 : 630,078,640.65 = 113,344,047.90 : x
  2. Step 2: Convert to fraction form
    420,052,427.10/630,078,640.65 = 113,344,047.90/x
  3. Step 3: Cross multiply
    420,052,427.10x = 630,078,640.65 × 113,344,047.90
  4. Step 4: Simplify right side
    420,052,427.10x = 71,415,663,626,600,488
  5. Step 5: Solve for x
    x = 71,415,663,626,600,488/420,052,427.10
  6. Step 6: Final answer
    x = 170,016,071.85

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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.