Home / 953,402.40-1,428,937.20-420,357.60

Finding the Fourth Proportional to 953,402.40, 1,428,937.20 and 420,357.60

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Solution

The fourth proportional to 953,402.40, 1,428,937.20 and 420,357.60 is: 630,022.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    953,402.40 : 1,428,937.20 = 420,357.60 : x
  2. Step 2: Convert to fraction form
    953,402.40/1,428,937.20 = 420,357.60/x
  3. Step 3: Cross multiply
    953,402.40x = 1,428,937.20 × 420,357.60
  4. Step 4: Simplify right side
    953,402.40x = 600,664,611,942.72
  5. Step 5: Solve for x
    x = 600,664,611,942.72/953,402.40
  6. Step 6: Final answer
    x = 630,022.13

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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.