Home / 672,731.30-1,007,955.05-405,931.20

Finding the Fourth Proportional to 672,731.30, 1,007,955.05 and 405,931.20

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Solution

The fourth proportional to 672,731.30, 1,007,955.05 and 405,931.20 is: 608,207.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,731.30 : 1,007,955.05 = 405,931.20 : x
  2. Step 2: Convert to fraction form
    672,731.30/1,007,955.05 = 405,931.20/x
  3. Step 3: Cross multiply
    672,731.30x = 1,007,955.05 × 405,931.20
  4. Step 4: Simplify right side
    672,731.30x = 409,160,402,992.56
  5. Step 5: Solve for x
    x = 409,160,402,992.56/672,731.30
  6. Step 6: Final answer
    x = 608,207.77

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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.