Home / 862,086,728.40-1,293,130,092.60-378,357,320.40

Finding the Fourth Proportional to 862,086,728.40, 1,293,130,092.60 and 378,357,320.40

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Solution

The fourth proportional to 862,086,728.40, 1,293,130,092.60 and 378,357,320.40 is: 567,535,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,086,728.40 : 1,293,130,092.60 = 378,357,320.40 : x
  2. Step 2: Convert to fraction form
    862,086,728.40/1,293,130,092.60 = 378,357,320.40/x
  3. Step 3: Cross multiply
    862,086,728.40x = 1,293,130,092.60 × 378,357,320.40
  4. Step 4: Simplify right side
    862,086,728.40x = 489,265,236,764,739,776
  5. Step 5: Solve for x
    x = 489,265,236,764,739,776/862,086,728.40
  6. Step 6: Final answer
    x = 567,535,980.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.