Home / 406,934.76-561,455.43-320,626.17

Finding the Fourth Proportional to 406,934.76, 561,455.43 and 320,626.17

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Solution

The fourth proportional to 406,934.76, 561,455.43 and 320,626.17 is: 442,373.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,934.76 : 561,455.43 = 320,626.17 : x
  2. Step 2: Convert to fraction form
    406,934.76/561,455.43 = 320,626.17/x
  3. Step 3: Cross multiply
    406,934.76x = 561,455.43 × 320,626.17
  4. Step 4: Simplify right side
    406,934.76x = 180,017,304,146.60
  5. Step 5: Solve for x
    x = 180,017,304,146.60/406,934.76
  6. Step 6: Final answer
    x = 442,373.87

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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.