Home / 671,981.04-1,007,621.64-316,899.72

Finding the Fourth Proportional to 671,981.04, 1,007,621.64 and 316,899.72

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Solution

The fourth proportional to 671,981.04, 1,007,621.64 and 316,899.72 is: 475,184.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,981.04 : 1,007,621.64 = 316,899.72 : x
  2. Step 2: Convert to fraction form
    671,981.04/1,007,621.64 = 316,899.72/x
  3. Step 3: Cross multiply
    671,981.04x = 1,007,621.64 × 316,899.72
  4. Step 4: Simplify right side
    671,981.04x = 319,315,015,581.94
  5. Step 5: Solve for x
    x = 319,315,015,581.94/671,981.04
  6. Step 6: Final answer
    x = 475,184.56

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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.