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Finding the Fourth Proportional to 586,144.12, 808,879.34 and 317,872.12

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Solution

The fourth proportional to 586,144.12, 808,879.34 and 317,872.12 is: 438,663.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,144.12 : 808,879.34 = 317,872.12 : x
  2. Step 2: Convert to fraction form
    586,144.12/808,879.34 = 317,872.12/x
  3. Step 3: Cross multiply
    586,144.12x = 808,879.34 × 317,872.12
  4. Step 4: Simplify right side
    586,144.12x = 257,120,190,630.00
  5. Step 5: Solve for x
    x = 257,120,190,630.00/586,144.12
  6. Step 6: Final answer
    x = 438,663.77

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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.