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Finding the Fourth Proportional to 558,667.12, 770,959.20 and 304,018.24

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Solution

The fourth proportional to 558,667.12, 770,959.20 and 304,018.24 is: 419,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,667.12 : 770,959.20 = 304,018.24 : x
  2. Step 2: Convert to fraction form
    558,667.12/770,959.20 = 304,018.24/x
  3. Step 3: Cross multiply
    558,667.12x = 770,959.20 × 304,018.24
  4. Step 4: Simplify right side
    558,667.12x = 234,385,659,095.81
  5. Step 5: Solve for x
    x = 234,385,659,095.81/558,667.12
  6. Step 6: Final answer
    x = 419,544.40

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Double scale
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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.