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Finding the Fourth Proportional to 561,784.12, 775,262.04 and 307,135.24

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Solution

The fourth proportional to 561,784.12, 775,262.04 and 307,135.24 is: 423,846.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,784.12 : 775,262.04 = 307,135.24 : x
  2. Step 2: Convert to fraction form
    561,784.12/775,262.04 = 307,135.24/x
  3. Step 3: Cross multiply
    561,784.12x = 775,262.04 × 307,135.24
  4. Step 4: Simplify right side
    561,784.12x = 238,110,292,718.29
  5. Step 5: Solve for x
    x = 238,110,292,718.29/561,784.12
  6. Step 6: Final answer
    x = 423,846.61

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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.