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Finding the Fourth Proportional to 567,263.90, 782,840.59 and 312,631.49

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Solution

The fourth proportional to 567,263.90, 782,840.59 and 312,631.49 is: 431,440.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,263.90 : 782,840.59 = 312,631.49 : x
  2. Step 2: Convert to fraction form
    567,263.90/782,840.59 = 312,631.49/x
  3. Step 3: Cross multiply
    567,263.90x = 782,840.59 × 312,631.49
  4. Step 4: Simplify right side
    567,263.90x = 244,740,616,563.92
  5. Step 5: Solve for x
    x = 244,740,616,563.92/567,263.90
  6. Step 6: Final answer
    x = 431,440.49

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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.