Home / 695,654.10-959,784.75-389,689.16

Finding the Fourth Proportional to 695,654.10, 959,784.75 and 389,689.16

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Solution

The fourth proportional to 695,654.10, 959,784.75 and 389,689.16 is: 537,648.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,654.10 : 959,784.75 = 389,689.16 : x
  2. Step 2: Convert to fraction form
    695,654.10/959,784.75 = 389,689.16/x
  3. Step 3: Cross multiply
    695,654.10x = 959,784.75 × 389,689.16
  4. Step 4: Simplify right side
    695,654.10x = 374,017,708,209.39
  5. Step 5: Solve for x
    x = 374,017,708,209.39/695,654.10
  6. Step 6: Final answer
    x = 537,648.97

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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.