Home / 553,149,124.80-763,344,225.12-305,628,715.68

Finding the Fourth Proportional to 553,149,124.80, 763,344,225.12 and 305,628,715.68

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Solution

The fourth proportional to 553,149,124.80, 763,344,225.12 and 305,628,715.68 is: 421,766,761.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,149,124.80 : 763,344,225.12 = 305,628,715.68 : x
  2. Step 2: Convert to fraction form
    553,149,124.80/763,344,225.12 = 305,628,715.68/x
  3. Step 3: Cross multiply
    553,149,124.80x = 763,344,225.12 × 305,628,715.68
  4. Step 4: Simplify right side
    553,149,124.80x = 233,299,915,145,170,400
  5. Step 5: Solve for x
    x = 233,299,915,145,170,400/553,149,124.80
  6. Step 6: Final answer
    x = 421,766,761.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.