Home / 727,466,977.40-1,003,904,830.78-392,939,497.76

Finding the Fourth Proportional to 727,466,977.40, 1,003,904,830.78 and 392,939,497.76

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Solution

The fourth proportional to 727,466,977.40, 1,003,904,830.78 and 392,939,497.76 is: 542,256,724.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,466,977.40 : 1,003,904,830.78 = 392,939,497.76 : x
  2. Step 2: Convert to fraction form
    727,466,977.40/1,003,904,830.78 = 392,939,497.76/x
  3. Step 3: Cross multiply
    727,466,977.40x = 1,003,904,830.78 × 392,939,497.76
  4. Step 4: Simplify right side
    727,466,977.40x = 394,473,859,999,529,152
  5. Step 5: Solve for x
    x = 394,473,859,999,529,152/727,466,977.40
  6. Step 6: Final answer
    x = 542,256,724.03

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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.