Home / 9,000,178.75-12,420,279.59-4,870,209.92

Finding the Fourth Proportional to 9,000,178.75, 12,420,279.59 and 4,870,209.92

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Solution

The fourth proportional to 9,000,178.75, 12,420,279.59 and 4,870,209.92 is: 6,720,907.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000,178.75 : 12,420,279.59 = 4,870,209.92 : x
  2. Step 2: Convert to fraction form
    9,000,178.75/12,420,279.59 = 4,870,209.92/x
  3. Step 3: Cross multiply
    9,000,178.75x = 12,420,279.59 × 4,870,209.92
  4. Step 4: Simplify right side
    9,000,178.75x = 60,489,368,781,939.09
  5. Step 5: Solve for x
    x = 60,489,368,781,939.09/9,000,178.75
  6. Step 6: Final answer
    x = 6,720,907.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.