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Finding the Fourth Proportional to 550,758.99, 760,007.55 and 305,756.90

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Solution

The fourth proportional to 550,758.99, 760,007.55 and 305,756.90 is: 421,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,758.99 : 760,007.55 = 305,756.90 : x
  2. Step 2: Convert to fraction form
    550,758.99/760,007.55 = 305,756.90/x
  3. Step 3: Cross multiply
    550,758.99x = 760,007.55 × 305,756.90
  4. Step 4: Simplify right side
    550,758.99x = 232,377,554,364.61
  5. Step 5: Solve for x
    x = 232,377,554,364.61/550,758.99
  6. Step 6: Final answer
    x = 421,922.40

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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.