Home / 686,069.40-1,029,795.30-331,368.60

Finding the Fourth Proportional to 686,069.40, 1,029,795.30 and 331,368.60

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Solution

The fourth proportional to 686,069.40, 1,029,795.30 and 331,368.60 is: 497,386.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,069.40 : 1,029,795.30 = 331,368.60 : x
  2. Step 2: Convert to fraction form
    686,069.40/1,029,795.30 = 331,368.60/x
  3. Step 3: Cross multiply
    686,069.40x = 1,029,795.30 × 331,368.60
  4. Step 4: Simplify right side
    686,069.40x = 341,241,826,847.58
  5. Step 5: Solve for x
    x = 341,241,826,847.58/686,069.40
  6. Step 6: Final answer
    x = 497,386.75

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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.