Home / 917,057.80-1,374,420.30-442,721.80

Finding the Fourth Proportional to 917,057.80, 1,374,420.30 and 442,721.80

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Solution

The fourth proportional to 917,057.80, 1,374,420.30 and 442,721.80 is: 663,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,057.80 : 1,374,420.30 = 442,721.80 : x
  2. Step 2: Convert to fraction form
    917,057.80/1,374,420.30 = 442,721.80/x
  3. Step 3: Cross multiply
    917,057.80x = 1,374,420.30 × 442,721.80
  4. Step 4: Simplify right side
    917,057.80x = 608,485,829,172.54
  5. Step 5: Solve for x
    x = 608,485,829,172.54/917,057.80
  6. Step 6: Final answer
    x = 663,519.60

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1.5x scale

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.