Home / 641,931.80-962,460.30-305,133.80

Finding the Fourth Proportional to 641,931.80, 962,460.30 and 305,133.80

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Solution

The fourth proportional to 641,931.80, 962,460.30 and 305,133.80 is: 457,492.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,931.80 : 962,460.30 = 305,133.80 : x
  2. Step 2: Convert to fraction form
    641,931.80/962,460.30 = 305,133.80/x
  3. Step 3: Cross multiply
    641,931.80x = 962,460.30 × 305,133.80
  4. Step 4: Simplify right side
    641,931.80x = 293,679,168,688.14
  5. Step 5: Solve for x
    x = 293,679,168,688.14/641,931.80
  6. Step 6: Final answer
    x = 457,492.79

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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.