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Finding the Fourth Proportional to 616,994.40, 851,446.24 and 345,059.20

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Solution

The fourth proportional to 616,994.40, 851,446.24 and 345,059.20 is: 476,178.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,994.40 : 851,446.24 = 345,059.20 : x
  2. Step 2: Convert to fraction form
    616,994.40/851,446.24 = 345,059.20/x
  3. Step 3: Cross multiply
    616,994.40x = 851,446.24 × 345,059.20
  4. Step 4: Simplify right side
    616,994.40x = 293,799,358,417.41
  5. Step 5: Solve for x
    x = 293,799,358,417.41/616,994.40
  6. Step 6: Final answer
    x = 476,178.32

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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.