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Finding the Fourth Proportional to 553,606.40, 829,243.20 and 448,630.40

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Solution

The fourth proportional to 553,606.40, 829,243.20 and 448,630.40 is: 672,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,606.40 : 829,243.20 = 448,630.40 : x
  2. Step 2: Convert to fraction form
    553,606.40/829,243.20 = 448,630.40/x
  3. Step 3: Cross multiply
    553,606.40x = 829,243.20 × 448,630.40
  4. Step 4: Simplify right side
    553,606.40x = 372,023,708,513.28
  5. Step 5: Solve for x
    x = 372,023,708,513.28/553,606.40
  6. Step 6: Final answer
    x = 672,000.38

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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.