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Finding the Fourth Proportional to 642,771.59, 887,005.57 and 352,373.23

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Solution

The fourth proportional to 642,771.59, 887,005.57 and 352,373.23 is: 486,264.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,771.59 : 887,005.57 = 352,373.23 : x
  2. Step 2: Convert to fraction form
    642,771.59/887,005.57 = 352,373.23/x
  3. Step 3: Cross multiply
    642,771.59x = 887,005.57 × 352,373.23
  4. Step 4: Simplify right side
    642,771.59x = 312,557,015,967.03
  5. Step 5: Solve for x
    x = 312,557,015,967.03/642,771.59
  6. Step 6: Final answer
    x = 486,264.52

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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.