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Finding the Fourth Proportional to 570,626.06, 787,487.70 and 315,977.26

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Solution

The fourth proportional to 570,626.06, 787,487.70 and 315,977.26 is: 436,061.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,626.06 : 787,487.70 = 315,977.26 : x
  2. Step 2: Convert to fraction form
    570,626.06/787,487.70 = 315,977.26/x
  3. Step 3: Cross multiply
    570,626.06x = 787,487.70 × 315,977.26
  4. Step 4: Simplify right side
    570,626.06x = 248,828,205,729.70
  5. Step 5: Solve for x
    x = 248,828,205,729.70/570,626.06
  6. Step 6: Final answer
    x = 436,061.76

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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.