Home / 1,115,089.19-1,538,854.64-631,654.21

Finding the Fourth Proportional to 1,115,089.19, 1,538,854.64 and 631,654.21

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Solution

The fourth proportional to 1,115,089.19, 1,538,854.64 and 631,654.21 is: 871,700.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,089.19 : 1,538,854.64 = 631,654.21 : x
  2. Step 2: Convert to fraction form
    1,115,089.19/1,538,854.64 = 631,654.21/x
  3. Step 3: Cross multiply
    1,115,089.19x = 1,538,854.64 × 631,654.21
  4. Step 4: Simplify right side
    1,115,089.19x = 972,024,011,934.03
  5. Step 5: Solve for x
    x = 972,024,011,934.03/1,115,089.19
  6. Step 6: Final answer
    x = 871,700.69

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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.