Home / 908,430.56-1,253,662.58-521,316.80

Finding the Fourth Proportional to 908,430.56, 1,253,662.58 and 521,316.80

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Solution

The fourth proportional to 908,430.56, 1,253,662.58 and 521,316.80 is: 719,433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,430.56 : 1,253,662.58 = 521,316.80 : x
  2. Step 2: Convert to fraction form
    908,430.56/1,253,662.58 = 521,316.80/x
  3. Step 3: Cross multiply
    908,430.56x = 1,253,662.58 × 521,316.80
  4. Step 4: Simplify right side
    908,430.56x = 653,555,361,289.15
  5. Step 5: Solve for x
    x = 653,555,361,289.15/908,430.56
  6. Step 6: Final answer
    x = 719,433.48

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1.5x scale

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.