Home / 869,342.91-1,199,692.40-487,369.77

Finding the Fourth Proportional to 869,342.91, 1,199,692.40 and 487,369.77

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Solution

The fourth proportional to 869,342.91, 1,199,692.40 and 487,369.77 is: 672,569.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,342.91 : 1,199,692.40 = 487,369.77 : x
  2. Step 2: Convert to fraction form
    869,342.91/1,199,692.40 = 487,369.77/x
  3. Step 3: Cross multiply
    869,342.91x = 1,199,692.40 × 487,369.77
  4. Step 4: Simplify right side
    869,342.91x = 584,693,809,058.75
  5. Step 5: Solve for x
    x = 584,693,809,058.75/869,342.91
  6. Step 6: Final answer
    x = 672,569.83

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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.