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Finding the Fourth Proportional to 671,347.60, 1,008,187.80 and 356,419.60

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Solution

The fourth proportional to 671,347.60, 1,008,187.80 and 356,419.60 is: 535,248.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,347.60 : 1,008,187.80 = 356,419.60 : x
  2. Step 2: Convert to fraction form
    671,347.60/1,008,187.80 = 356,419.60/x
  3. Step 3: Cross multiply
    671,347.60x = 1,008,187.80 × 356,419.60
  4. Step 4: Simplify right side
    671,347.60x = 359,337,892,400.88
  5. Step 5: Solve for x
    x = 359,337,892,400.88/671,347.60
  6. Step 6: Final answer
    x = 535,248.64

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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.