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Finding the Fourth Proportional to 566,989.07, 782,407.78 and 312,340.26

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Solution

The fourth proportional to 566,989.07, 782,407.78 and 312,340.26 is: 431,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,989.07 : 782,407.78 = 312,340.26 : x
  2. Step 2: Convert to fraction form
    566,989.07/782,407.78 = 312,340.26/x
  3. Step 3: Cross multiply
    566,989.07x = 782,407.78 × 312,340.26
  4. Step 4: Simplify right side
    566,989.07x = 244,377,449,431.22
  5. Step 5: Solve for x
    x = 244,377,449,431.22/566,989.07
  6. Step 6: Final answer
    x = 431,009.10

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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.