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Finding the Fourth Proportional to 558,003.59, 770,105.12 and 316,260.21

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Solution

The fourth proportional to 558,003.59, 770,105.12 and 316,260.21 is: 436,473.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,003.59 : 770,105.12 = 316,260.21 : x
  2. Step 2: Convert to fraction form
    558,003.59/770,105.12 = 316,260.21/x
  3. Step 3: Cross multiply
    558,003.59x = 770,105.12 × 316,260.21
  4. Step 4: Simplify right side
    558,003.59x = 243,553,606,973.28
  5. Step 5: Solve for x
    x = 243,553,606,973.28/558,003.59
  6. Step 6: Final answer
    x = 436,473.19

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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.