Home / 724,307.81-1,086,199.28-324,742.91

Finding the Fourth Proportional to 724,307.81, 1,086,199.28 and 324,742.91

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Solution

The fourth proportional to 724,307.81, 1,086,199.28 and 324,742.91 is: 486,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,307.81 : 1,086,199.28 = 324,742.91 : x
  2. Step 2: Convert to fraction form
    724,307.81/1,086,199.28 = 324,742.91/x
  3. Step 3: Cross multiply
    724,307.81x = 1,086,199.28 × 324,742.91
  4. Step 4: Simplify right side
    724,307.81x = 352,735,516,118.89
  5. Step 5: Solve for x
    x = 352,735,516,118.89/724,307.81
  6. Step 6: Final answer
    x = 486,996.70

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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.