Home / 687,946.80-1,031,574.60-313,546.80

Finding the Fourth Proportional to 687,946.80, 1,031,574.60 and 313,546.80

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Solution

The fourth proportional to 687,946.80, 1,031,574.60 and 313,546.80 is: 470,162.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,946.80 : 1,031,574.60 = 313,546.80 : x
  2. Step 2: Convert to fraction form
    687,946.80/1,031,574.60 = 313,546.80/x
  3. Step 3: Cross multiply
    687,946.80x = 1,031,574.60 × 313,546.80
  4. Step 4: Simplify right side
    687,946.80x = 323,446,914,791.28
  5. Step 5: Solve for x
    x = 323,446,914,791.28/687,946.80
  6. Step 6: Final answer
    x = 470,162.69

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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.