Home / 815,271.71-1,221,575.85-495,521.37

Finding the Fourth Proportional to 815,271.71, 1,221,575.85 and 495,521.37

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Solution

The fourth proportional to 815,271.71, 1,221,575.85 and 495,521.37 is: 742,472.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,271.71 : 1,221,575.85 = 495,521.37 : x
  2. Step 2: Convert to fraction form
    815,271.71/1,221,575.85 = 495,521.37/x
  3. Step 3: Cross multiply
    815,271.71x = 1,221,575.85 × 495,521.37
  4. Step 4: Simplify right side
    815,271.71x = 605,316,938,750.92
  5. Step 5: Solve for x
    x = 605,316,938,750.92/815,271.71
  6. Step 6: Final answer
    x = 742,472.64

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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.