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Finding the Fourth Proportional to 659,994.75, 910,803.69 and 358,188.75

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Solution

The fourth proportional to 659,994.75, 910,803.69 and 358,188.75 is: 494,306.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,994.75 : 910,803.69 = 358,188.75 : x
  2. Step 2: Convert to fraction form
    659,994.75/910,803.69 = 358,188.75/x
  3. Step 3: Cross multiply
    659,994.75x = 910,803.69 × 358,188.75
  4. Step 4: Simplify right side
    659,994.75x = 326,239,635,216.49
  5. Step 5: Solve for x
    x = 326,239,635,216.49/659,994.75
  6. Step 6: Final answer
    x = 494,306.41

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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.