Home / 7,124,893.20-10,687,339.80-6,403,280.40

Finding the Fourth Proportional to 7,124,893.20, 10,687,339.80 and 6,403,280.40

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Solution

The fourth proportional to 7,124,893.20, 10,687,339.80 and 6,403,280.40 is: 9,604,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124,893.20 : 10,687,339.80 = 6,403,280.40 : x
  2. Step 2: Convert to fraction form
    7,124,893.20/10,687,339.80 = 6,403,280.40/x
  3. Step 3: Cross multiply
    7,124,893.20x = 10,687,339.80 × 6,403,280.40
  4. Step 4: Simplify right side
    7,124,893.20x = 68,434,033,469,479.93
  5. Step 5: Solve for x
    x = 68,434,033,469,479.93/7,124,893.20
  6. Step 6: Final answer
    x = 9,604,920.60

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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.