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Finding the Fourth Proportional to 558,002.61, 770,103.72 and 316,259.19

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Solution

The fourth proportional to 558,002.61, 770,103.72 and 316,259.19 is: 436,471.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,002.61 : 770,103.72 = 316,259.19 : x
  2. Step 2: Convert to fraction form
    558,002.61/770,103.72 = 316,259.19/x
  3. Step 3: Cross multiply
    558,002.61x = 770,103.72 × 316,259.19
  4. Step 4: Simplify right side
    558,002.61x = 243,552,378,703.19
  5. Step 5: Solve for x
    x = 243,552,378,703.19/558,002.61
  6. Step 6: Final answer
    x = 436,471.76

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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.