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Finding the Fourth Proportional to 390,640.61, 588,888.84 and 364,600.52

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Solution

The fourth proportional to 390,640.61, 588,888.84 and 364,600.52 is: 549,633.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,640.61 : 588,888.84 = 364,600.52 : x
  2. Step 2: Convert to fraction form
    390,640.61/588,888.84 = 364,600.52/x
  3. Step 3: Cross multiply
    390,640.61x = 588,888.84 × 364,600.52
  4. Step 4: Simplify right side
    390,640.61x = 214,709,177,286.20
  5. Step 5: Solve for x
    x = 214,709,177,286.20/390,640.61
  6. Step 6: Final answer
    x = 549,633.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.