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Finding the Fourth Proportional to 590,908.30, 885,325.65 and 485,154.70

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Solution

The fourth proportional to 590,908.30, 885,325.65 and 485,154.70 is: 726,880.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,908.30 : 885,325.65 = 485,154.70 : x
  2. Step 2: Convert to fraction form
    590,908.30/885,325.65 = 485,154.70/x
  3. Step 3: Cross multiply
    590,908.30x = 885,325.65 × 485,154.70
  4. Step 4: Simplify right side
    590,908.30x = 429,519,900,128.06
  5. Step 5: Solve for x
    x = 429,519,900,128.06/590,908.30
  6. Step 6: Final answer
    x = 726,880.80

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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.