Home / 821,424.80-1,232,353.20-260,458.40

Finding the Fourth Proportional to 821,424.80, 1,232,353.20 and 260,458.40

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Solution

The fourth proportional to 821,424.80, 1,232,353.20 and 260,458.40 is: 390,756.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,424.80 : 1,232,353.20 = 260,458.40 : x
  2. Step 2: Convert to fraction form
    821,424.80/1,232,353.20 = 260,458.40/x
  3. Step 3: Cross multiply
    821,424.80x = 1,232,353.20 × 260,458.40
  4. Step 4: Simplify right side
    821,424.80x = 320,976,742,706.88
  5. Step 5: Solve for x
    x = 320,976,742,706.88/821,424.80
  6. Step 6: Final answer
    x = 390,756.09

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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.