Home / 521,902,866.35-720,228,802.85-307,330,872.59

Finding the Fourth Proportional to 521,902,866.35, 720,228,802.85 and 307,330,872.59

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Solution

The fourth proportional to 521,902,866.35, 720,228,802.85 and 307,330,872.59 is: 424,118,280.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,902,866.35 : 720,228,802.85 = 307,330,872.59 : x
  2. Step 2: Convert to fraction form
    521,902,866.35/720,228,802.85 = 307,330,872.59/x
  3. Step 3: Cross multiply
    521,902,866.35x = 720,228,802.85 × 307,330,872.59
  4. Step 4: Simplify right side
    521,902,866.35x = 221,348,546,439,203,776
  5. Step 5: Solve for x
    x = 221,348,546,439,203,776/521,902,866.35
  6. Step 6: Final answer
    x = 424,118,280.84

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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.