Home / 7,120,935.20-10,681,402.80-5,217,370.40

Finding the Fourth Proportional to 7,120,935.20, 10,681,402.80 and 5,217,370.40

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Solution

The fourth proportional to 7,120,935.20, 10,681,402.80 and 5,217,370.40 is: 7,826,055.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120,935.20 : 10,681,402.80 = 5,217,370.40 : x
  2. Step 2: Convert to fraction form
    7,120,935.20/10,681,402.80 = 5,217,370.40/x
  3. Step 3: Cross multiply
    7,120,935.20x = 10,681,402.80 × 5,217,370.40
  4. Step 4: Simplify right side
    7,120,935.20x = 55,728,834,799,197.12
  5. Step 5: Solve for x
    x = 55,728,834,799,197.12/7,120,935.20
  6. Step 6: Final answer
    x = 7,826,055.60

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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.