Home / 840,536.34-1,159,892.88-478,048.38

Finding the Fourth Proportional to 840,536.34, 1,159,892.88 and 478,048.38

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Solution

The fourth proportional to 840,536.34, 1,159,892.88 and 478,048.38 is: 659,679.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,536.34 : 1,159,892.88 = 478,048.38 : x
  2. Step 2: Convert to fraction form
    840,536.34/1,159,892.88 = 478,048.38/x
  3. Step 3: Cross multiply
    840,536.34x = 1,159,892.88 × 478,048.38
  4. Step 4: Simplify right side
    840,536.34x = 554,484,912,257.53
  5. Step 5: Solve for x
    x = 554,484,912,257.53/840,536.34
  6. Step 6: Final answer
    x = 659,679.88

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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.