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Finding the Fourth Proportional to 500,694.80, 750,074.40 and 278,404.88

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Solution

The fourth proportional to 500,694.80, 750,074.40 and 278,404.88 is: 417,069.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,694.80 : 750,074.40 = 278,404.88 : x
  2. Step 2: Convert to fraction form
    500,694.80/750,074.40 = 278,404.88/x
  3. Step 3: Cross multiply
    500,694.80x = 750,074.40 × 278,404.88
  4. Step 4: Simplify right side
    500,694.80x = 208,824,373,323.07
  5. Step 5: Solve for x
    x = 208,824,373,323.07/500,694.80
  6. Step 6: Final answer
    x = 417,069.19

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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.