Home / 1,188,005.70-1,782,008.55-478,542.90

Finding the Fourth Proportional to 1,188,005.70, 1,782,008.55 and 478,542.90

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Solution

The fourth proportional to 1,188,005.70, 1,782,008.55 and 478,542.90 is: 717,814.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,005.70 : 1,782,008.55 = 478,542.90 : x
  2. Step 2: Convert to fraction form
    1,188,005.70/1,782,008.55 = 478,542.90/x
  3. Step 3: Cross multiply
    1,188,005.70x = 1,782,008.55 × 478,542.90
  4. Step 4: Simplify right side
    1,188,005.70x = 852,767,539,341.80
  5. Step 5: Solve for x
    x = 852,767,539,341.80/1,188,005.70
  6. Step 6: Final answer
    x = 717,814.35

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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.