Home / 7,172,719.40-9,897,903.24-3,953,455.40

Finding the Fourth Proportional to 7,172,719.40, 9,897,903.24 and 3,953,455.40

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Solution

The fourth proportional to 7,172,719.40, 9,897,903.24 and 3,953,455.40 is: 5,455,520.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172,719.40 : 9,897,903.24 = 3,953,455.40 : x
  2. Step 2: Convert to fraction form
    7,172,719.40/9,897,903.24 = 3,953,455.40/x
  3. Step 3: Cross multiply
    7,172,719.40x = 9,897,903.24 × 3,953,455.40
  4. Step 4: Simplify right side
    7,172,719.40x = 39,130,918,963,365.98
  5. Step 5: Solve for x
    x = 39,130,918,963,365.98/7,172,719.40
  6. Step 6: Final answer
    x = 5,455,520.68

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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.