Home / 478,334,708.38-660,101,905.83-258,318,134.38

Finding the Fourth Proportional to 478,334,708.38, 660,101,905.83 and 258,318,134.38

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Solution

The fourth proportional to 478,334,708.38, 660,101,905.83 and 258,318,134.38 is: 356,479,029.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,334,708.38 : 660,101,905.83 = 258,318,134.38 : x
  2. Step 2: Convert to fraction form
    478,334,708.38/660,101,905.83 = 258,318,134.38/x
  3. Step 3: Cross multiply
    478,334,708.38x = 660,101,905.83 × 258,318,134.38
  4. Step 4: Simplify right side
    478,334,708.38x = 170,516,292,814,688,064
  5. Step 5: Solve for x
    x = 170,516,292,814,688,064/478,334,708.38
  6. Step 6: Final answer
    x = 356,479,029.91

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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.