Home / 1,391,521.76-2,087,580.16-431,956.32

Finding the Fourth Proportional to 1,391,521.76, 2,087,580.16 and 431,956.32

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Solution

The fourth proportional to 1,391,521.76, 2,087,580.16 and 431,956.32 is: 648,026.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,521.76 : 2,087,580.16 = 431,956.32 : x
  2. Step 2: Convert to fraction form
    1,391,521.76/2,087,580.16 = 431,956.32/x
  3. Step 3: Cross multiply
    1,391,521.76x = 2,087,580.16 × 431,956.32
  4. Step 4: Simplify right side
    1,391,521.76x = 901,743,443,618.61
  5. Step 5: Solve for x
    x = 901,743,443,618.61/1,391,521.76
  6. Step 6: Final answer
    x = 648,026.84

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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.