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Finding the Fourth Proportional to 721,068.08, 994,963.42 and 415,085.34

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Solution

The fourth proportional to 721,068.08, 994,963.42 and 415,085.34 is: 572,754.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,068.08 : 994,963.42 = 415,085.34 : x
  2. Step 2: Convert to fraction form
    721,068.08/994,963.42 = 415,085.34/x
  3. Step 3: Cross multiply
    721,068.08x = 994,963.42 × 415,085.34
  4. Step 4: Simplify right side
    721,068.08x = 412,994,729,478.26
  5. Step 5: Solve for x
    x = 412,994,729,478.26/721,068.08
  6. Step 6: Final answer
    x = 572,754.14

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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.