Home / 724,679.40-1,086,630.30-303,479.40

Finding the Fourth Proportional to 724,679.40, 1,086,630.30 and 303,479.40

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Solution

The fourth proportional to 724,679.40, 1,086,630.30 and 303,479.40 is: 455,056.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,679.40 : 1,086,630.30 = 303,479.40 : x
  2. Step 2: Convert to fraction form
    724,679.40/1,086,630.30 = 303,479.40/x
  3. Step 3: Cross multiply
    724,679.40x = 1,086,630.30 × 303,479.40
  4. Step 4: Simplify right side
    724,679.40x = 329,769,911,465.82
  5. Step 5: Solve for x
    x = 329,769,911,465.82/724,679.40
  6. Step 6: Final answer
    x = 455,056.28

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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.