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Finding the Fourth Proportional to 478,774.98, 660,679.47 and 263,916.90

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Solution

The fourth proportional to 478,774.98, 660,679.47 and 263,916.90 is: 364,188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,774.98 : 660,679.47 = 263,916.90 : x
  2. Step 2: Convert to fraction form
    478,774.98/660,679.47 = 263,916.90/x
  3. Step 3: Cross multiply
    478,774.98x = 660,679.47 × 263,916.90
  4. Step 4: Simplify right side
    478,774.98x = 174,364,477,616.04
  5. Step 5: Solve for x
    x = 174,364,477,616.04/478,774.98
  6. Step 6: Final answer
    x = 364,188.78

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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.