Home / 386,380,764-533,156,980.56-261,205,320.96

Finding the Fourth Proportional to 386,380,764, 533,156,980.56 and 261,205,320.96

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Solution

The fourth proportional to 386,380,764, 533,156,980.56 and 261,205,320.96 is: 360,430,573.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,380,764 : 533,156,980.56 = 261,205,320.96 : x
  2. Step 2: Convert to fraction form
    386,380,764/533,156,980.56 = 261,205,320.96/x
  3. Step 3: Cross multiply
    386,380,764x = 533,156,980.56 × 261,205,320.96
  4. Step 4: Simplify right side
    386,380,764x = 139,263,440,229,239,280
  5. Step 5: Solve for x
    x = 139,263,440,229,239,280/386,380,764
  6. Step 6: Final answer
    x = 360,430,573.17

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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.