Home / 686,720.10-1,031,246.55-509,427.30

Finding the Fourth Proportional to 686,720.10, 1,031,246.55 and 509,427.30

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Solution

The fourth proportional to 686,720.10, 1,031,246.55 and 509,427.30 is: 765,006.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,720.10 : 1,031,246.55 = 509,427.30 : x
  2. Step 2: Convert to fraction form
    686,720.10/1,031,246.55 = 509,427.30/x
  3. Step 3: Cross multiply
    686,720.10x = 1,031,246.55 × 509,427.30
  4. Step 4: Simplify right side
    686,720.10x = 525,345,145,600.82
  5. Step 5: Solve for x
    x = 525,345,145,600.82/686,720.10
  6. Step 6: Final answer
    x = 765,006.22

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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.