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Finding the Fourth Proportional to 569,212.68, 785,529.75 and 311,103.96

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Solution

The fourth proportional to 569,212.68, 785,529.75 and 311,103.96 is: 429,332.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,212.68 : 785,529.75 = 311,103.96 : x
  2. Step 2: Convert to fraction form
    569,212.68/785,529.75 = 311,103.96/x
  3. Step 3: Cross multiply
    569,212.68x = 785,529.75 × 311,103.96
  4. Step 4: Simplify right side
    569,212.68x = 244,381,415,922.81
  5. Step 5: Solve for x
    x = 244,381,415,922.81/569,212.68
  6. Step 6: Final answer
    x = 429,332.35

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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.