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Finding the Fourth Proportional to 672,951.07, 928,506.34 and 397,315.35

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Solution

The fourth proportional to 672,951.07, 928,506.34 and 397,315.35 is: 548,197.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,951.07 : 928,506.34 = 397,315.35 : x
  2. Step 2: Convert to fraction form
    672,951.07/928,506.34 = 397,315.35/x
  3. Step 3: Cross multiply
    672,951.07x = 928,506.34 × 397,315.35
  4. Step 4: Simplify right side
    672,951.07x = 368,909,827,812.81
  5. Step 5: Solve for x
    x = 368,909,827,812.81/672,951.07
  6. Step 6: Final answer
    x = 548,197.10

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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.