Home / 1,288,188.50-1,777,666.30-715,213.94

Finding the Fourth Proportional to 1,288,188.50, 1,777,666.30 and 715,213.94

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Solution

The fourth proportional to 1,288,188.50, 1,777,666.30 and 715,213.94 is: 986,976.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,188.50 : 1,777,666.30 = 715,213.94 : x
  2. Step 2: Convert to fraction form
    1,288,188.50/1,777,666.30 = 715,213.94/x
  3. Step 3: Cross multiply
    1,288,188.50x = 1,777,666.30 × 715,213.94
  4. Step 4: Simplify right side
    1,288,188.50x = 1,271,411,707,751.86
  5. Step 5: Solve for x
    x = 1,271,411,707,751.86/1,288,188.50
  6. Step 6: Final answer
    x = 986,976.45

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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.