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Finding the Fourth Proportional to 566,795.70, 782,142.59 and 312,146.90

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Solution

The fourth proportional to 566,795.70, 782,142.59 and 312,146.90 is: 430,743.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,795.70 : 782,142.59 = 312,146.90 : x
  2. Step 2: Convert to fraction form
    566,795.70/782,142.59 = 312,146.90/x
  3. Step 3: Cross multiply
    566,795.70x = 782,142.59 × 312,146.90
  4. Step 4: Simplify right side
    566,795.70x = 244,143,379,355.02
  5. Step 5: Solve for x
    x = 244,143,379,355.02/566,795.70
  6. Step 6: Final answer
    x = 430,743.17

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1.5x scale

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.