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Finding the Fourth Proportional to 613,378.33, 920,897.18 and 423,366.28

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Solution

The fourth proportional to 613,378.33, 920,897.18 and 423,366.28 is: 635,622.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,378.33 : 920,897.18 = 423,366.28 : x
  2. Step 2: Convert to fraction form
    613,378.33/920,897.18 = 423,366.28/x
  3. Step 3: Cross multiply
    613,378.33x = 920,897.18 × 423,366.28
  4. Step 4: Simplify right side
    613,378.33x = 389,876,810,527.64
  5. Step 5: Solve for x
    x = 389,876,810,527.64/613,378.33
  6. Step 6: Final answer
    x = 635,622.08

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1.5x scale

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.