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Finding the Fourth Proportional to 710,043.90, 979,305.03 and 455,418.30

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Solution

The fourth proportional to 710,043.90, 979,305.03 and 455,418.30 is: 628,120.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,043.90 : 979,305.03 = 455,418.30 : x
  2. Step 2: Convert to fraction form
    710,043.90/979,305.03 = 455,418.30/x
  3. Step 3: Cross multiply
    710,043.90x = 979,305.03 × 455,418.30
  4. Step 4: Simplify right side
    710,043.90x = 445,993,431,944.05
  5. Step 5: Solve for x
    x = 445,993,431,944.05/710,043.90
  6. Step 6: Final answer
    x = 628,120.93

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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.