Home / 915,642.28-1,263,524.65-507,729.12

Finding the Fourth Proportional to 915,642.28, 1,263,524.65 and 507,729.12

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Solution

The fourth proportional to 915,642.28, 1,263,524.65 and 507,729.12 is: 700,631.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,642.28 : 1,263,524.65 = 507,729.12 : x
  2. Step 2: Convert to fraction form
    915,642.28/1,263,524.65 = 507,729.12/x
  3. Step 3: Cross multiply
    915,642.28x = 1,263,524.65 × 507,729.12
  4. Step 4: Simplify right side
    915,642.28x = 641,528,258,642.81
  5. Step 5: Solve for x
    x = 641,528,258,642.81/915,642.28
  6. Step 6: Final answer
    x = 700,631.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.