Home / 687,925.80-1,031,543.10-313,525.80

Finding the Fourth Proportional to 687,925.80, 1,031,543.10 and 313,525.80

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Solution

The fourth proportional to 687,925.80, 1,031,543.10 and 313,525.80 is: 470,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,925.80 : 1,031,543.10 = 313,525.80 : x
  2. Step 2: Convert to fraction form
    687,925.80/1,031,543.10 = 313,525.80/x
  3. Step 3: Cross multiply
    687,925.80x = 1,031,543.10 × 313,525.80
  4. Step 4: Simplify right side
    687,925.80x = 323,415,375,661.98
  5. Step 5: Solve for x
    x = 323,415,375,661.98/687,925.80
  6. Step 6: Final answer
    x = 470,131.19

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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.