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Finding the Fourth Proportional to 5,576,728.80, 8,364,920.40 and 1,587,640.80

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Solution

The fourth proportional to 5,576,728.80, 8,364,920.40 and 1,587,640.80 is: 2,381,412.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,576,728.80 : 8,364,920.40 = 1,587,640.80 : x
  2. Step 2: Convert to fraction form
    5,576,728.80/8,364,920.40 = 1,587,640.80/x
  3. Step 3: Cross multiply
    5,576,728.80x = 8,364,920.40 × 1,587,640.80
  4. Step 4: Simplify right side
    5,576,728.80x = 13,280,488,915,792.32
  5. Step 5: Solve for x
    x = 13,280,488,915,792.32/5,576,728.80
  6. Step 6: Final answer
    x = 2,381,412.01

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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.