Home / 1,298,405.80-1,946,687.10-499,378.60

Finding the Fourth Proportional to 1,298,405.80, 1,946,687.10 and 499,378.60

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Solution

The fourth proportional to 1,298,405.80, 1,946,687.10 and 499,378.60 is: 748,713.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,405.80 : 1,946,687.10 = 499,378.60 : x
  2. Step 2: Convert to fraction form
    1,298,405.80/1,946,687.10 = 499,378.60/x
  3. Step 3: Cross multiply
    1,298,405.80x = 1,946,687.10 × 499,378.60
  4. Step 4: Simplify right side
    1,298,405.80x = 972,133,878,636.06
  5. Step 5: Solve for x
    x = 972,133,878,636.06/1,298,405.80
  6. Step 6: Final answer
    x = 748,713.44

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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.