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Finding the Fourth Proportional to 606,902.40, 911,390.40 and 397,468.80

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Solution

The fourth proportional to 606,902.40, 911,390.40 and 397,468.80 is: 596,882.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,902.40 : 911,390.40 = 397,468.80 : x
  2. Step 2: Convert to fraction form
    606,902.40/911,390.40 = 397,468.80/x
  3. Step 3: Cross multiply
    606,902.40x = 911,390.40 × 397,468.80
  4. Step 4: Simplify right side
    606,902.40x = 362,249,248,619.52
  5. Step 5: Solve for x
    x = 362,249,248,619.52/606,902.40
  6. Step 6: Final answer
    x = 596,882.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.