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Finding the Fourth Proportional to 553,241.98, 763,470.56 and 311,602.44

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Solution

The fourth proportional to 553,241.98, 763,470.56 and 311,602.44 is: 430,009.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,241.98 : 763,470.56 = 311,602.44 : x
  2. Step 2: Convert to fraction form
    553,241.98/763,470.56 = 311,602.44/x
  3. Step 3: Cross multiply
    553,241.98x = 763,470.56 × 311,602.44
  4. Step 4: Simplify right side
    553,241.98x = 237,899,293,006.19
  5. Step 5: Solve for x
    x = 237,899,293,006.19/553,241.98
  6. Step 6: Final answer
    x = 430,009.47

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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.