Home / 667,748.29-921,539.40-377,386.68

Finding the Fourth Proportional to 667,748.29, 921,539.40 and 377,386.68

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Solution

The fourth proportional to 667,748.29, 921,539.40 and 377,386.68 is: 520,820.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,748.29 : 921,539.40 = 377,386.68 : x
  2. Step 2: Convert to fraction form
    667,748.29/921,539.40 = 377,386.68/x
  3. Step 3: Cross multiply
    667,748.29x = 921,539.40 × 377,386.68
  4. Step 4: Simplify right side
    667,748.29x = 347,776,696,070.39
  5. Step 5: Solve for x
    x = 347,776,696,070.39/667,748.29
  6. Step 6: Final answer
    x = 520,820.05

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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.