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Finding the Fourth Proportional to 623,370.52, 860,678.22 and 397,322.20

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Solution

The fourth proportional to 623,370.52, 860,678.22 and 397,322.20 is: 548,576.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,370.52 : 860,678.22 = 397,322.20 : x
  2. Step 2: Convert to fraction form
    623,370.52/860,678.22 = 397,322.20/x
  3. Step 3: Cross multiply
    623,370.52x = 860,678.22 × 397,322.20
  4. Step 4: Simplify right side
    623,370.52x = 341,966,563,862.48
  5. Step 5: Solve for x
    x = 341,966,563,862.48/623,370.52
  6. Step 6: Final answer
    x = 548,576.73

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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.