Home / 485,003,959.20-727,505,938.80-139,968,842.40

Finding the Fourth Proportional to 485,003,959.20, 727,505,938.80 and 139,968,842.40

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Solution

The fourth proportional to 485,003,959.20, 727,505,938.80 and 139,968,842.40 is: 209,953,263.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,003,959.20 : 727,505,938.80 = 139,968,842.40 : x
  2. Step 2: Convert to fraction form
    485,003,959.20/727,505,938.80 = 139,968,842.40/x
  3. Step 3: Cross multiply
    485,003,959.20x = 727,505,938.80 × 139,968,842.40
  4. Step 4: Simplify right side
    485,003,959.20x = 101,828,164,092,961,248
  5. Step 5: Solve for x
    x = 101,828,164,092,961,248/485,003,959.20
  6. Step 6: Final answer
    x = 209,953,263.60

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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.