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Finding the Fourth Proportional to 566,999.99, 782,459.63 and 312,351.18

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Solution

The fourth proportional to 566,999.99, 782,459.63 and 312,351.18 is: 431,044.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,999.99 : 782,459.63 = 312,351.18 : x
  2. Step 2: Convert to fraction form
    566,999.99/782,459.63 = 312,351.18/x
  3. Step 3: Cross multiply
    566,999.99x = 782,459.63 × 312,351.18
  4. Step 4: Simplify right side
    566,999.99x = 244,402,188,732.86
  5. Step 5: Solve for x
    x = 244,402,188,732.86/566,999.99
  6. Step 6: Final answer
    x = 431,044.43

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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.