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Finding the Fourth Proportional to 556,780.74, 768,359.48 and 302,131.95

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Solution

The fourth proportional to 556,780.74, 768,359.48 and 302,131.95 is: 416,943.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,780.74 : 768,359.48 = 302,131.95 : x
  2. Step 2: Convert to fraction form
    556,780.74/768,359.48 = 302,131.95/x
  3. Step 3: Cross multiply
    556,780.74x = 768,359.48 × 302,131.95
  4. Step 4: Simplify right side
    556,780.74x = 232,145,946,482.73
  5. Step 5: Solve for x
    x = 232,145,946,482.73/556,780.74
  6. Step 6: Final answer
    x = 416,943.21

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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.