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Finding the Fourth Proportional to 768,700.77, 1,152,932.87 and 256,374.92

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Solution

The fourth proportional to 768,700.77, 1,152,932.87 and 256,374.92 is: 384,522.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,700.77 : 1,152,932.87 = 256,374.92 : x
  2. Step 2: Convert to fraction form
    768,700.77/1,152,932.87 = 256,374.92/x
  3. Step 3: Cross multiply
    768,700.77x = 1,152,932.87 × 256,374.92
  4. Step 4: Simplify right side
    768,700.77x = 295,583,075,834.89
  5. Step 5: Solve for x
    x = 295,583,075,834.89/768,700.77
  6. Step 6: Final answer
    x = 384,522.94

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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.