Home / 687,967.80-1,031,606.10-313,567.80

Finding the Fourth Proportional to 687,967.80, 1,031,606.10 and 313,567.80

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Solution

The fourth proportional to 687,967.80, 1,031,606.10 and 313,567.80 is: 470,194.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,967.80 : 1,031,606.10 = 313,567.80 : x
  2. Step 2: Convert to fraction form
    687,967.80/1,031,606.10 = 313,567.80/x
  3. Step 3: Cross multiply
    687,967.80x = 1,031,606.10 × 313,567.80
  4. Step 4: Simplify right side
    687,967.80x = 323,478,455,243.58
  5. Step 5: Solve for x
    x = 323,478,455,243.58/687,967.80
  6. Step 6: Final answer
    x = 470,194.18

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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.