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Finding the Fourth Proportional to 563,115.78, 777,101.04 and 308,467.98

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Solution

The fourth proportional to 563,115.78, 777,101.04 and 308,467.98 is: 425,686.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,115.78 : 777,101.04 = 308,467.98 : x
  2. Step 2: Convert to fraction form
    563,115.78/777,101.04 = 308,467.98/x
  3. Step 3: Cross multiply
    563,115.78x = 777,101.04 × 308,467.98
  4. Step 4: Simplify right side
    563,115.78x = 239,710,788,064.70
  5. Step 5: Solve for x
    x = 239,710,788,064.70/563,115.78
  6. Step 6: Final answer
    x = 425,686.50

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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.