Home / 479,985.45-662,293.31-310,121.16

Finding the Fourth Proportional to 479,985.45, 662,293.31 and 310,121.16

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Solution

The fourth proportional to 479,985.45, 662,293.31 and 310,121.16 is: 427,911.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,985.45 : 662,293.31 = 310,121.16 : x
  2. Step 2: Convert to fraction form
    479,985.45/662,293.31 = 310,121.16/x
  3. Step 3: Cross multiply
    479,985.45x = 662,293.31 × 310,121.16
  4. Step 4: Simplify right side
    479,985.45x = 205,391,167,267.67
  5. Step 5: Solve for x
    x = 205,391,167,267.67/479,985.45
  6. Step 6: Final answer
    x = 427,911.24

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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.