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Finding the Fourth Proportional to 563,386.78, 777,479.88 and 308,732.50

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Solution

The fourth proportional to 563,386.78, 777,479.88 and 308,732.50 is: 426,054.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,386.78 : 777,479.88 = 308,732.50 : x
  2. Step 2: Convert to fraction form
    563,386.78/777,479.88 = 308,732.50/x
  3. Step 3: Cross multiply
    563,386.78x = 777,479.88 × 308,732.50
  4. Step 4: Simplify right side
    563,386.78x = 240,033,307,052.10
  5. Step 5: Solve for x
    x = 240,033,307,052.10/563,386.78
  6. Step 6: Final answer
    x = 426,054.21

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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.