Home / 1,226,320.80-1,692,378-689,776.80

Finding the Fourth Proportional to 1,226,320.80, 1,692,378 and 689,776.80

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Solution

The fourth proportional to 1,226,320.80, 1,692,378 and 689,776.80 is: 951,923.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,320.80 : 1,692,378 = 689,776.80 : x
  2. Step 2: Convert to fraction form
    1,226,320.80/1,692,378 = 689,776.80/x
  3. Step 3: Cross multiply
    1,226,320.80x = 1,692,378 × 689,776.80
  4. Step 4: Simplify right side
    1,226,320.80x = 1,167,363,081,230.40
  5. Step 5: Solve for x
    x = 1,167,363,081,230.40/1,226,320.80
  6. Step 6: Final answer
    x = 951,923.09

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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.