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Finding the Fourth Proportional to 563,663.28, 777,855.33 and 309,016.26

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Solution

The fourth proportional to 563,663.28, 777,855.33 and 309,016.26 is: 426,442.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,663.28 : 777,855.33 = 309,016.26 : x
  2. Step 2: Convert to fraction form
    563,663.28/777,855.33 = 309,016.26/x
  3. Step 3: Cross multiply
    563,663.28x = 777,855.33 × 309,016.26
  4. Step 4: Simplify right side
    563,663.28x = 240,369,944,897.67
  5. Step 5: Solve for x
    x = 240,369,944,897.67/563,663.28
  6. Step 6: Final answer
    x = 426,442.44

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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.