Home / 916,971.80-1,374,291.30-442,635.80

Finding the Fourth Proportional to 916,971.80, 1,374,291.30 and 442,635.80

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Solution

The fourth proportional to 916,971.80, 1,374,291.30 and 442,635.80 is: 663,390.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,971.80 : 1,374,291.30 = 442,635.80 : x
  2. Step 2: Convert to fraction form
    916,971.80/1,374,291.30 = 442,635.80/x
  3. Step 3: Cross multiply
    916,971.80x = 1,374,291.30 × 442,635.80
  4. Step 4: Simplify right side
    916,971.80x = 608,310,529,008.54
  5. Step 5: Solve for x
    x = 608,310,529,008.54/916,971.80
  6. Step 6: Final answer
    x = 663,390.66

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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.