Home / 515,564,673.48-711,539,832.78-289,540,802.34

Finding the Fourth Proportional to 515,564,673.48, 711,539,832.78 and 289,540,802.34

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Solution

The fourth proportional to 515,564,673.48, 711,539,832.78 and 289,540,802.34 is: 399,600,330.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,564,673.48 : 711,539,832.78 = 289,540,802.34 : x
  2. Step 2: Convert to fraction form
    515,564,673.48/711,539,832.78 = 289,540,802.34/x
  3. Step 3: Cross multiply
    515,564,673.48x = 711,539,832.78 × 289,540,802.34
  4. Step 4: Simplify right side
    515,564,673.48x = 206,019,814,079,990,592
  5. Step 5: Solve for x
    x = 206,019,814,079,990,592/515,564,673.48
  6. Step 6: Final answer
    x = 399,600,330.82

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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.