Home / 672,731.80-1,007,955.80-405,931.70

Finding the Fourth Proportional to 672,731.80, 1,007,955.80 and 405,931.70

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Solution

The fourth proportional to 672,731.80, 1,007,955.80 and 405,931.70 is: 608,208.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,731.80 : 1,007,955.80 = 405,931.70 : x
  2. Step 2: Convert to fraction form
    672,731.80/1,007,955.80 = 405,931.70/x
  3. Step 3: Cross multiply
    672,731.80x = 1,007,955.80 × 405,931.70
  4. Step 4: Simplify right side
    672,731.80x = 409,161,211,418.86
  5. Step 5: Solve for x
    x = 409,161,211,418.86/672,731.80
  6. Step 6: Final answer
    x = 608,208.52

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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.