Home / 674,929.86-931,637.76-388,564.08

Finding the Fourth Proportional to 674,929.86, 931,637.76 and 388,564.08

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Solution

The fourth proportional to 674,929.86, 931,637.76 and 388,564.08 is: 536,353.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,929.86 : 931,637.76 = 388,564.08 : x
  2. Step 2: Convert to fraction form
    674,929.86/931,637.76 = 388,564.08/x
  3. Step 3: Cross multiply
    674,929.86x = 931,637.76 × 388,564.08
  4. Step 4: Simplify right side
    674,929.86x = 362,000,969,107.66
  5. Step 5: Solve for x
    x = 362,000,969,107.66/674,929.86
  6. Step 6: Final answer
    x = 536,353.47

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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.