Home / 687,416.60-1,030,250.10-331,664.60

Finding the Fourth Proportional to 687,416.60, 1,030,250.10 and 331,664.60

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Solution

The fourth proportional to 687,416.60, 1,030,250.10 and 331,664.60 is: 497,074.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,416.60 : 1,030,250.10 = 331,664.60 : x
  2. Step 2: Convert to fraction form
    687,416.60/1,030,250.10 = 331,664.60/x
  3. Step 3: Cross multiply
    687,416.60x = 1,030,250.10 × 331,664.60
  4. Step 4: Simplify right side
    687,416.60x = 341,697,487,316.46
  5. Step 5: Solve for x
    x = 341,697,487,316.46/687,416.60
  6. Step 6: Final answer
    x = 497,074.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.