Home / 687,928.08-1,031,421.09-350,315.22

Finding the Fourth Proportional to 687,928.08, 1,031,421.09 and 350,315.22

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Solution

The fourth proportional to 687,928.08, 1,031,421.09 and 350,315.22 is: 525,232.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,928.08 : 1,031,421.09 = 350,315.22 : x
  2. Step 2: Convert to fraction form
    687,928.08/1,031,421.09 = 350,315.22/x
  3. Step 3: Cross multiply
    687,928.08x = 1,031,421.09 × 350,315.22
  4. Step 4: Simplify right side
    687,928.08x = 361,322,506,055.99
  5. Step 5: Solve for x
    x = 361,322,506,055.99/687,928.08
  6. Step 6: Final answer
    x = 525,232.97

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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.