Home / 319,111,818.40-478,903,657.20-127,772,912.80

Finding the Fourth Proportional to 319,111,818.40, 478,903,657.20 and 127,772,912.80

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Solution

The fourth proportional to 319,111,818.40, 478,903,657.20 and 127,772,912.80 is: 191,753,835.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,111,818.40 : 478,903,657.20 = 127,772,912.80 : x
  2. Step 2: Convert to fraction form
    319,111,818.40/478,903,657.20 = 127,772,912.80/x
  3. Step 3: Cross multiply
    319,111,818.40x = 478,903,657.20 × 127,772,912.80
  4. Step 4: Simplify right side
    319,111,818.40x = 61,190,915,231,016,688
  5. Step 5: Solve for x
    x = 61,190,915,231,016,688/319,111,818.40
  6. Step 6: Final answer
    x = 191,753,835.81

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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.