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Finding the Fourth Proportional to 605,871.70, 908,807.55 and 403,792.90

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Solution

The fourth proportional to 605,871.70, 908,807.55 and 403,792.90 is: 605,689.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,871.70 : 908,807.55 = 403,792.90 : x
  2. Step 2: Convert to fraction form
    605,871.70/908,807.55 = 403,792.90/x
  3. Step 3: Cross multiply
    605,871.70x = 908,807.55 × 403,792.90
  4. Step 4: Simplify right side
    605,871.70x = 366,970,036,156.40
  5. Step 5: Solve for x
    x = 366,970,036,156.40/605,871.70
  6. Step 6: Final answer
    x = 605,689.35

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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.