Home / 717,869,144.64-990,660,120.48-387,844,546.08

Finding the Fourth Proportional to 717,869,144.64, 990,660,120.48 and 387,844,546.08

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Solution

The fourth proportional to 717,869,144.64, 990,660,120.48 and 387,844,546.08 is: 535,225,852.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,869,144.64 : 990,660,120.48 = 387,844,546.08 : x
  2. Step 2: Convert to fraction form
    717,869,144.64/990,660,120.48 = 387,844,546.08/x
  3. Step 3: Cross multiply
    717,869,144.64x = 990,660,120.48 × 387,844,546.08
  4. Step 4: Simplify right side
    717,869,144.64x = 384,222,124,747,123,712
  5. Step 5: Solve for x
    x = 384,222,124,747,123,712/717,869,144.64
  6. Step 6: Final answer
    x = 535,225,852.25

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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.