Home / 978,825,712.62-1,350,621,431.55-561,061,123.50

Finding the Fourth Proportional to 978,825,712.62, 1,350,621,431.55 and 561,061,123.50

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Solution

The fourth proportional to 978,825,712.62, 1,350,621,431.55 and 561,061,123.50 is: 774,173,755.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,825,712.62 : 1,350,621,431.55 = 561,061,123.50 : x
  2. Step 2: Convert to fraction form
    978,825,712.62/1,350,621,431.55 = 561,061,123.50/x
  3. Step 3: Cross multiply
    978,825,712.62x = 1,350,621,431.55 × 561,061,123.50
  4. Step 4: Simplify right side
    978,825,712.62x = 757,781,177,808,621,312
  5. Step 5: Solve for x
    x = 757,781,177,808,621,312/978,825,712.62
  6. Step 6: Final answer
    x = 774,173,755.39

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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.