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Finding the Fourth Proportional to 5,658,305.78, 8,487,461.39 and 1,871,788.65

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Solution

The fourth proportional to 5,658,305.78, 8,487,461.39 and 1,871,788.65 is: 2,807,683.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,658,305.78 : 8,487,461.39 = 1,871,788.65 : x
  2. Step 2: Convert to fraction form
    5,658,305.78/8,487,461.39 = 1,871,788.65/x
  3. Step 3: Cross multiply
    5,658,305.78x = 8,487,461.39 × 1,871,788.65
  4. Step 4: Simplify right side
    5,658,305.78x = 15,886,733,887,756.28
  5. Step 5: Solve for x
    x = 15,886,733,887,756.28/5,658,305.78
  6. Step 6: Final answer
    x = 2,807,683.88

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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.