Home / 1,298,897.76-1,791,318.08-815,507.76

Finding the Fourth Proportional to 1,298,897.76, 1,791,318.08 and 815,507.76

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Solution

The fourth proportional to 1,298,897.76, 1,791,318.08 and 815,507.76 is: 1,124,671.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,897.76 : 1,791,318.08 = 815,507.76 : x
  2. Step 2: Convert to fraction form
    1,298,897.76/1,791,318.08 = 815,507.76/x
  3. Step 3: Cross multiply
    1,298,897.76x = 1,791,318.08 × 815,507.76
  4. Step 4: Simplify right side
    1,298,897.76x = 1,460,833,794,868.30
  5. Step 5: Solve for x
    x = 1,460,833,794,868.30/1,298,897.76
  6. Step 6: Final answer
    x = 1,124,671.89

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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.