Home / 921,716.03-1,380,749.25-434,731.28

Finding the Fourth Proportional to 921,716.03, 1,380,749.25 and 434,731.28

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Solution

The fourth proportional to 921,716.03, 1,380,749.25 and 434,731.28 is: 651,236.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,716.03 : 1,380,749.25 = 434,731.28 : x
  2. Step 2: Convert to fraction form
    921,716.03/1,380,749.25 = 434,731.28/x
  3. Step 3: Cross multiply
    921,716.03x = 1,380,749.25 × 434,731.28
  4. Step 4: Simplify right side
    921,716.03x = 600,254,888,811.54
  5. Step 5: Solve for x
    x = 600,254,888,811.54/921,716.03
  6. Step 6: Final answer
    x = 651,236.25

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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.