Home / 686,070.40-1,029,796.80-331,369.60

Finding the Fourth Proportional to 686,070.40, 1,029,796.80 and 331,369.60

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Solution

The fourth proportional to 686,070.40, 1,029,796.80 and 331,369.60 is: 497,388.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,070.40 : 1,029,796.80 = 331,369.60 : x
  2. Step 2: Convert to fraction form
    686,070.40/1,029,796.80 = 331,369.60/x
  3. Step 3: Cross multiply
    686,070.40x = 1,029,796.80 × 331,369.60
  4. Step 4: Simplify right side
    686,070.40x = 341,243,353,697.28
  5. Step 5: Solve for x
    x = 341,243,353,697.28/686,070.40
  6. Step 6: Final answer
    x = 497,388.25

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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.