Home / 858,678.80-1,288,022.64-503,443.70

Finding the Fourth Proportional to 858,678.80, 1,288,022.64 and 503,443.70

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Solution

The fourth proportional to 858,678.80, 1,288,022.64 and 503,443.70 is: 755,168.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,678.80 : 1,288,022.64 = 503,443.70 : x
  2. Step 2: Convert to fraction form
    858,678.80/1,288,022.64 = 503,443.70/x
  3. Step 3: Cross multiply
    858,678.80x = 1,288,022.64 × 503,443.70
  4. Step 4: Simplify right side
    858,678.80x = 648,446,883,565.37
  5. Step 5: Solve for x
    x = 648,446,883,565.37/858,678.80
  6. Step 6: Final answer
    x = 755,168.15

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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.