Home / 319,111,810.40-478,903,645.20-127,772,904.80

Finding the Fourth Proportional to 319,111,810.40, 478,903,645.20 and 127,772,904.80

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Solution

The fourth proportional to 319,111,810.40, 478,903,645.20 and 127,772,904.80 is: 191,753,823.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,111,810.40 : 478,903,645.20 = 127,772,904.80 : x
  2. Step 2: Convert to fraction form
    319,111,810.40/478,903,645.20 = 127,772,904.80/x
  3. Step 3: Cross multiply
    319,111,810.40x = 478,903,645.20 × 127,772,904.80
  4. Step 4: Simplify right side
    319,111,810.40x = 61,190,909,866,512,576
  5. Step 5: Solve for x
    x = 61,190,909,866,512,576/319,111,810.40
  6. Step 6: Final answer
    x = 191,753,823.81

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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.