Home / 768,855.60-1,154,267.55-409,312.80

Finding the Fourth Proportional to 768,855.60, 1,154,267.55 and 409,312.80

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Solution

The fourth proportional to 768,855.60, 1,154,267.55 and 409,312.80 is: 614,493.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,855.60 : 1,154,267.55 = 409,312.80 : x
  2. Step 2: Convert to fraction form
    768,855.60/1,154,267.55 = 409,312.80/x
  3. Step 3: Cross multiply
    768,855.60x = 1,154,267.55 × 409,312.80
  4. Step 4: Simplify right side
    768,855.60x = 472,456,482,839.64
  5. Step 5: Solve for x
    x = 472,456,482,839.64/768,855.60
  6. Step 6: Final answer
    x = 614,493.13

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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.