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Finding the Fourth Proportional to 478,866.74, 660,835.88 and 274,930.81

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Solution

The fourth proportional to 478,866.74, 660,835.88 and 274,930.81 is: 379,404.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,866.74 : 660,835.88 = 274,930.81 : x
  2. Step 2: Convert to fraction form
    478,866.74/660,835.88 = 274,930.81/x
  3. Step 3: Cross multiply
    478,866.74x = 660,835.88 × 274,930.81
  4. Step 4: Simplify right side
    478,866.74x = 181,684,139,086.63
  5. Step 5: Solve for x
    x = 181,684,139,086.63/478,866.74
  6. Step 6: Final answer
    x = 379,404.38

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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.