Home / 1,221,014.72-1,685,000.31-677,233.77

Finding the Fourth Proportional to 1,221,014.72, 1,685,000.31 and 677,233.77

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Solution

The fourth proportional to 1,221,014.72, 1,685,000.31 and 677,233.77 is: 934,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,014.72 : 1,685,000.31 = 677,233.77 : x
  2. Step 2: Convert to fraction form
    1,221,014.72/1,685,000.31 = 677,233.77/x
  3. Step 3: Cross multiply
    1,221,014.72x = 1,685,000.31 × 677,233.77
  4. Step 4: Simplify right side
    1,221,014.72x = 1,141,139,112,392.47
  5. Step 5: Solve for x
    x = 1,141,139,112,392.47/1,221,014.72
  6. Step 6: Final answer
    x = 934,582.60

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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.