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Finding the Fourth Proportional to 422,803.68, 583,130.24 and 371,707.84

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Solution

The fourth proportional to 422,803.68, 583,130.24 and 371,707.84 is: 512,658.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,803.68 : 583,130.24 = 371,707.84 : x
  2. Step 2: Convert to fraction form
    422,803.68/583,130.24 = 371,707.84/x
  3. Step 3: Cross multiply
    422,803.68x = 583,130.24 × 371,707.84
  4. Step 4: Simplify right side
    422,803.68x = 216,754,081,949.08
  5. Step 5: Solve for x
    x = 216,754,081,949.08/422,803.68
  6. Step 6: Final answer
    x = 512,658.93

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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.