Home / 664,019.10-993,966.80-359,657.28

Finding the Fourth Proportional to 664,019.10, 993,966.80 and 359,657.28

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Solution

The fourth proportional to 664,019.10, 993,966.80 and 359,657.28 is: 538,369.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,019.10 : 993,966.80 = 359,657.28 : x
  2. Step 2: Convert to fraction form
    664,019.10/993,966.80 = 359,657.28/x
  3. Step 3: Cross multiply
    664,019.10x = 993,966.80 × 359,657.28
  4. Step 4: Simplify right side
    664,019.10x = 357,487,393,900.02
  5. Step 5: Solve for x
    x = 357,487,393,900.02/664,019.10
  6. Step 6: Final answer
    x = 538,369.14

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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.