Home / 813,484.84-1,220,252.94-281,036.20

Finding the Fourth Proportional to 813,484.84, 1,220,252.94 and 281,036.20

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Solution

The fourth proportional to 813,484.84, 1,220,252.94 and 281,036.20 is: 421,563.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,484.84 : 1,220,252.94 = 281,036.20 : x
  2. Step 2: Convert to fraction form
    813,484.84/1,220,252.94 = 281,036.20/x
  3. Step 3: Cross multiply
    813,484.84x = 1,220,252.94 × 281,036.20
  4. Step 4: Simplify right side
    813,484.84x = 342,935,249,296.43
  5. Step 5: Solve for x
    x = 342,935,249,296.43/813,484.84
  6. Step 6: Final answer
    x = 421,563.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.