Home / 666,666.40-1,000,317.92-311,628.84

Finding the Fourth Proportional to 666,666.40, 1,000,317.92 and 311,628.84

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Solution

The fourth proportional to 666,666.40, 1,000,317.92 and 311,628.84 is: 467,592.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,666.40 : 1,000,317.92 = 311,628.84 : x
  2. Step 2: Convert to fraction form
    666,666.40/1,000,317.92 = 311,628.84/x
  3. Step 3: Cross multiply
    666,666.40x = 1,000,317.92 × 311,628.84
  4. Step 4: Simplify right side
    666,666.40x = 311,727,913,040.81
  5. Step 5: Solve for x
    x = 311,727,913,040.81/666,666.40
  6. Step 6: Final answer
    x = 467,592.06

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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.