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Finding the Fourth Proportional to 553,648.51, 830,989.39 and 283,979.11

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Solution

The fourth proportional to 553,648.51, 830,989.39 and 283,979.11 is: 426,233.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,648.51 : 830,989.39 = 283,979.11 : x
  2. Step 2: Convert to fraction form
    553,648.51/830,989.39 = 283,979.11/x
  3. Step 3: Cross multiply
    553,648.51x = 830,989.39 × 283,979.11
  4. Step 4: Simplify right side
    553,648.51x = 235,983,627,391.64
  5. Step 5: Solve for x
    x = 235,983,627,391.64/553,648.51
  6. Step 6: Final answer
    x = 426,233.65

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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.