Home / 518,857,912,565.40-778,404,226,985.82-280,087,436,964.36

Finding the Fourth Proportional to 518,857,912,565.40, 778,404,226,985.82 and 280,087,436,964.36

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Solution

The fourth proportional to 518,857,912,565.40, 778,404,226,985.82 and 280,087,436,964.36 is: 420,194,507,164.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,857,912,565.40 : 778,404,226,985.82 = 280,087,436,964.36 : x
  2. Step 2: Convert to fraction form
    518,857,912,565.40/778,404,226,985.82 = 280,087,436,964.36/x
  3. Step 3: Cross multiply
    518,857,912,565.40x = 778,404,226,985.82 × 280,087,436,964.36
  4. Step 4: Simplify right side
    518,857,912,565.40x = 218,021,244,858,682,197,409,792
  5. Step 5: Solve for x
    x = 218,021,244,858,682,197,409,792/518,857,912,565.40
  6. Step 6: Final answer
    x = 420,194,507,164.24

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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.