Home / 680,172,762.42-938,608,219.23-378,773,622.18

Finding the Fourth Proportional to 680,172,762.42, 938,608,219.23 and 378,773,622.18

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Solution

The fourth proportional to 680,172,762.42, 938,608,219.23 and 378,773,622.18 is: 522,690,784.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,172,762.42 : 938,608,219.23 = 378,773,622.18 : x
  2. Step 2: Convert to fraction form
    680,172,762.42/938,608,219.23 = 378,773,622.18/x
  3. Step 3: Cross multiply
    680,172,762.42x = 938,608,219.23 × 378,773,622.18
  4. Step 4: Simplify right side
    680,172,762.42x = 355,520,035,005,666,624
  5. Step 5: Solve for x
    x = 355,520,035,005,666,624/680,172,762.42
  6. Step 6: Final answer
    x = 522,690,784.82

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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.