Home / 686,681.55-1,030,317.57-331,962.30

Finding the Fourth Proportional to 686,681.55, 1,030,317.57 and 331,962.30

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Solution

The fourth proportional to 686,681.55, 1,030,317.57 and 331,962.30 is: 498,086.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,681.55 : 1,030,317.57 = 331,962.30 : x
  2. Step 2: Convert to fraction form
    686,681.55/1,030,317.57 = 331,962.30/x
  3. Step 3: Cross multiply
    686,681.55x = 1,030,317.57 × 331,962.30
  4. Step 4: Simplify right side
    686,681.55x = 342,026,590,267.61
  5. Step 5: Solve for x
    x = 342,026,590,267.61/686,681.55
  6. Step 6: Final answer
    x = 498,086.18

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1.5x scale

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.