Home / 921,625.92-1,271,870.70-539,616.96

Finding the Fourth Proportional to 921,625.92, 1,271,870.70 and 539,616.96

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Solution

The fourth proportional to 921,625.92, 1,271,870.70 and 539,616.96 is: 744,687.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,625.92 : 1,271,870.70 = 539,616.96 : x
  2. Step 2: Convert to fraction form
    921,625.92/1,271,870.70 = 539,616.96/x
  3. Step 3: Cross multiply
    921,625.92x = 1,271,870.70 × 539,616.96
  4. Step 4: Simplify right side
    921,625.92x = 686,323,000,647.07
  5. Step 5: Solve for x
    x = 686,323,000,647.07/921,625.92
  6. Step 6: Final answer
    x = 744,687.17

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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.