Home / 1,238,243.12-1,857,365.08-817,420.58

Finding the Fourth Proportional to 1,238,243.12, 1,857,365.08 and 817,420.58

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Solution

The fourth proportional to 1,238,243.12, 1,857,365.08 and 817,420.58 is: 1,226,131.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,243.12 : 1,857,365.08 = 817,420.58 : x
  2. Step 2: Convert to fraction form
    1,238,243.12/1,857,365.08 = 817,420.58/x
  3. Step 3: Cross multiply
    1,238,243.12x = 1,857,365.08 × 817,420.58
  4. Step 4: Simplify right side
    1,238,243.12x = 1,518,248,440,965.35
  5. Step 5: Solve for x
    x = 1,518,248,440,965.35/1,238,243.12
  6. Step 6: Final answer
    x = 1,226,131.13

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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.