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Finding the Fourth Proportional to 7,210,254.32, 9,939,550.16 and 5,488,375.76

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Solution

The fourth proportional to 7,210,254.32, 9,939,550.16 and 5,488,375.76 is: 7,565,889.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210,254.32 : 9,939,550.16 = 5,488,375.76 : x
  2. Step 2: Convert to fraction form
    7,210,254.32/9,939,550.16 = 5,488,375.76/x
  3. Step 3: Cross multiply
    7,210,254.32x = 9,939,550.16 × 5,488,375.76
  4. Step 4: Simplify right side
    7,210,254.32x = 54,551,986,163,448.12
  5. Step 5: Solve for x
    x = 54,551,986,163,448.12/7,210,254.32
  6. Step 6: Final answer
    x = 7,565,889.32

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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.