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Finding the Fourth Proportional to 835,694.80, 1,254,361.40 and 415,445.20

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Solution

The fourth proportional to 835,694.80, 1,254,361.40 and 415,445.20 is: 623,575.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,694.80 : 1,254,361.40 = 415,445.20 : x
  2. Step 2: Convert to fraction form
    835,694.80/1,254,361.40 = 415,445.20/x
  3. Step 3: Cross multiply
    835,694.80x = 1,254,361.40 × 415,445.20
  4. Step 4: Simplify right side
    835,694.80x = 521,118,422,695.28
  5. Step 5: Solve for x
    x = 521,118,422,695.28/835,694.80
  6. Step 6: Final answer
    x = 623,575.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.