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Finding the Fourth Proportional to 714,283.40, 985,755.42 and 472,146.05

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Solution

The fourth proportional to 714,283.40, 985,755.42 and 472,146.05 is: 651,590.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,283.40 : 985,755.42 = 472,146.05 : x
  2. Step 2: Convert to fraction form
    714,283.40/985,755.42 = 472,146.05/x
  3. Step 3: Cross multiply
    714,283.40x = 985,755.42 × 472,146.05
  4. Step 4: Simplify right side
    714,283.40x = 465,420,530,283.48
  5. Step 5: Solve for x
    x = 465,420,530,283.48/714,283.40
  6. Step 6: Final answer
    x = 651,590.85

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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.