Home / 462,968,019.45-697,223,443.20-421,643,167.29

Finding the Fourth Proportional to 462,968,019.45, 697,223,443.20 and 421,643,167.29

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Solution

The fourth proportional to 462,968,019.45, 697,223,443.20 and 421,643,167.29 is: 634,988,786.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,968,019.45 : 697,223,443.20 = 421,643,167.29 : x
  2. Step 2: Convert to fraction form
    462,968,019.45/697,223,443.20 = 421,643,167.29/x
  3. Step 3: Cross multiply
    462,968,019.45x = 697,223,443.20 × 421,643,167.29
  4. Step 4: Simplify right side
    462,968,019.45x = 293,979,500,899,687,424
  5. Step 5: Solve for x
    x = 293,979,500,899,687,424/462,968,019.45
  6. Step 6: Final answer
    x = 634,988,786.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.