Home / 747,210.42-1,029,945.78-505,404.77

Finding the Fourth Proportional to 747,210.42, 1,029,945.78 and 505,404.77

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Solution

The fourth proportional to 747,210.42, 1,029,945.78 and 505,404.77 is: 696,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,210.42 : 1,029,945.78 = 505,404.77 : x
  2. Step 2: Convert to fraction form
    747,210.42/1,029,945.78 = 505,404.77/x
  3. Step 3: Cross multiply
    747,210.42x = 1,029,945.78 × 505,404.77
  4. Step 4: Simplify right side
    747,210.42x = 520,539,504,903.64
  5. Step 5: Solve for x
    x = 520,539,504,903.64/747,210.42
  6. Step 6: Final answer
    x = 696,643.80

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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.