Home / 657,686.10-986,653.54-208,520.04

Finding the Fourth Proportional to 657,686.10, 986,653.54 and 208,520.04

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Solution

The fourth proportional to 657,686.10, 986,653.54 and 208,520.04 is: 312,819.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,686.10 : 986,653.54 = 208,520.04 : x
  2. Step 2: Convert to fraction form
    657,686.10/986,653.54 = 208,520.04/x
  3. Step 3: Cross multiply
    657,686.10x = 986,653.54 × 208,520.04
  4. Step 4: Simplify right side
    657,686.10x = 205,737,035,626.94
  5. Step 5: Solve for x
    x = 205,737,035,626.94/657,686.10
  6. Step 6: Final answer
    x = 312,819.50

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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.