Home / 707,721.40-1,062,019.50-287,000.92

Finding the Fourth Proportional to 707,721.40, 1,062,019.50 and 287,000.92

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Solution

The fourth proportional to 707,721.40, 1,062,019.50 and 287,000.92 is: 430,678.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,721.40 : 1,062,019.50 = 287,000.92 : x
  2. Step 2: Convert to fraction form
    707,721.40/1,062,019.50 = 287,000.92/x
  3. Step 3: Cross multiply
    707,721.40x = 1,062,019.50 × 287,000.92
  4. Step 4: Simplify right side
    707,721.40x = 304,800,573,557.94
  5. Step 5: Solve for x
    x = 304,800,573,557.94/707,721.40
  6. Step 6: Final answer
    x = 430,678.76

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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.