Home / 687,977.16-1,031,929.28-214,608.30

Finding the Fourth Proportional to 687,977.16, 1,031,929.28 and 214,608.30

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Solution

The fourth proportional to 687,977.16, 1,031,929.28 and 214,608.30 is: 321,901.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,977.16 : 1,031,929.28 = 214,608.30 : x
  2. Step 2: Convert to fraction form
    687,977.16/1,031,929.28 = 214,608.30/x
  3. Step 3: Cross multiply
    687,977.16x = 1,031,929.28 × 214,608.30
  4. Step 4: Simplify right side
    687,977.16x = 221,460,588,501.02
  5. Step 5: Solve for x
    x = 221,460,588,501.02/687,977.16
  6. Step 6: Final answer
    x = 321,901.08

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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.