Home / 747,212.42-1,029,948.54-505,406.76

Finding the Fourth Proportional to 747,212.42, 1,029,948.54 and 505,406.76

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Solution

The fourth proportional to 747,212.42, 1,029,948.54 and 505,406.76 is: 696,646.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,212.42 : 1,029,948.54 = 505,406.76 : x
  2. Step 2: Convert to fraction form
    747,212.42/1,029,948.54 = 505,406.76/x
  3. Step 3: Cross multiply
    747,212.42x = 1,029,948.54 × 505,406.76
  4. Step 4: Simplify right side
    747,212.42x = 520,542,954,568.13
  5. Step 5: Solve for x
    x = 520,542,954,568.13/747,212.42
  6. Step 6: Final answer
    x = 696,646.55

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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.