Home / 687,971.16-1,031,920.29-214,602.30

Finding the Fourth Proportional to 687,971.16, 1,031,920.29 and 214,602.30

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Solution

The fourth proportional to 687,971.16, 1,031,920.29 and 214,602.30 is: 321,892.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,971.16 : 1,031,920.29 = 214,602.30 : x
  2. Step 2: Convert to fraction form
    687,971.16/1,031,920.29 = 214,602.30/x
  3. Step 3: Cross multiply
    687,971.16x = 1,031,920.29 × 214,602.30
  4. Step 4: Simplify right side
    687,971.16x = 221,452,467,650.67
  5. Step 5: Solve for x
    x = 221,452,467,650.67/687,971.16
  6. Step 6: Final answer
    x = 321,892.08

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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.