Home / 1,386,521.70-2,079,782.55-487,956.30

Finding the Fourth Proportional to 1,386,521.70, 2,079,782.55 and 487,956.30

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Solution

The fourth proportional to 1,386,521.70, 2,079,782.55 and 487,956.30 is: 731,934.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,521.70 : 2,079,782.55 = 487,956.30 : x
  2. Step 2: Convert to fraction form
    1,386,521.70/2,079,782.55 = 487,956.30/x
  3. Step 3: Cross multiply
    1,386,521.70x = 2,079,782.55 × 487,956.30
  4. Step 4: Simplify right side
    1,386,521.70x = 1,014,842,997,902.57
  5. Step 5: Solve for x
    x = 1,014,842,997,902.57/1,386,521.70
  6. Step 6: Final answer
    x = 731,934.45

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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.