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Finding the Fourth Proportional to 553,513.10, 763,557.10 and 349,490.30

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Solution

The fourth proportional to 553,513.10, 763,557.10 and 349,490.30 is: 482,112.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,513.10 : 763,557.10 = 349,490.30 : x
  2. Step 2: Convert to fraction form
    553,513.10/763,557.10 = 349,490.30/x
  3. Step 3: Cross multiply
    553,513.10x = 763,557.10 × 349,490.30
  4. Step 4: Simplify right side
    553,513.10x = 266,855,795,254.62
  5. Step 5: Solve for x
    x = 266,855,795,254.62/553,513.10
  6. Step 6: Final answer
    x = 482,112.89

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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.