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Finding the Fourth Proportional to 605,510.90, 910,234.65 and 518,905.70

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Solution

The fourth proportional to 605,510.90, 910,234.65 and 518,905.70 is: 780,045.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,510.90 : 910,234.65 = 518,905.70 : x
  2. Step 2: Convert to fraction form
    605,510.90/910,234.65 = 518,905.70/x
  3. Step 3: Cross multiply
    605,510.90x = 910,234.65 × 518,905.70
  4. Step 4: Simplify right side
    605,510.90x = 472,325,948,222.51
  5. Step 5: Solve for x
    x = 472,325,948,222.51/605,510.90
  6. Step 6: Final answer
    x = 780,045.33

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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.