Home / 1,226,988.76-1,692,903.90-791,221.72

Finding the Fourth Proportional to 1,226,988.76, 1,692,903.90 and 791,221.72

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Solution

The fourth proportional to 1,226,988.76, 1,692,903.90 and 791,221.72 is: 1,091,666.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,988.76 : 1,692,903.90 = 791,221.72 : x
  2. Step 2: Convert to fraction form
    1,226,988.76/1,692,903.90 = 791,221.72/x
  3. Step 3: Cross multiply
    1,226,988.76x = 1,692,903.90 × 791,221.72
  4. Step 4: Simplify right side
    1,226,988.76x = 1,339,462,335,552.71
  5. Step 5: Solve for x
    x = 1,339,462,335,552.71/1,226,988.76
  6. Step 6: Final answer
    x = 1,091,666.35

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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.