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Finding the Fourth Proportional to 508,403.90, 701,305.89 and 317,085.14

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Solution

The fourth proportional to 508,403.90, 701,305.89 and 317,085.14 is: 437,395.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,403.90 : 701,305.89 = 317,085.14 : x
  2. Step 2: Convert to fraction form
    508,403.90/701,305.89 = 317,085.14/x
  3. Step 3: Cross multiply
    508,403.90x = 701,305.89 × 317,085.14
  4. Step 4: Simplify right side
    508,403.90x = 222,373,676,313.48
  5. Step 5: Solve for x
    x = 222,373,676,313.48/508,403.90
  6. Step 6: Final answer
    x = 437,395.69

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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.