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Finding the Fourth Proportional to 478,858.40, 660,829.20 and 264,006.80

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Solution

The fourth proportional to 478,858.40, 660,829.20 and 264,006.80 is: 364,331.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,858.40 : 660,829.20 = 264,006.80 : x
  2. Step 2: Convert to fraction form
    478,858.40/660,829.20 = 264,006.80/x
  3. Step 3: Cross multiply
    478,858.40x = 660,829.20 × 264,006.80
  4. Step 4: Simplify right side
    478,858.40x = 174,463,402,438.56
  5. Step 5: Solve for x
    x = 174,463,402,438.56/478,858.40
  6. Step 6: Final answer
    x = 364,331.92

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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.