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Finding the Fourth Proportional to 563,841.89, 778,053.65 and 318,814.62

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Solution

The fourth proportional to 563,841.89, 778,053.65 and 318,814.62 is: 439,936.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,841.89 : 778,053.65 = 318,814.62 : x
  2. Step 2: Convert to fraction form
    563,841.89/778,053.65 = 318,814.62/x
  3. Step 3: Cross multiply
    563,841.89x = 778,053.65 × 318,814.62
  4. Step 4: Simplify right side
    563,841.89x = 248,054,877,170.29
  5. Step 5: Solve for x
    x = 248,054,877,170.29/563,841.89
  6. Step 6: Final answer
    x = 439,936.95

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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.