Home / 686,021.10-1,030,198.05-508,728.30

Finding the Fourth Proportional to 686,021.10, 1,030,198.05 and 508,728.30

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Solution

The fourth proportional to 686,021.10, 1,030,198.05 and 508,728.30 is: 763,957.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,021.10 : 1,030,198.05 = 508,728.30 : x
  2. Step 2: Convert to fraction form
    686,021.10/1,030,198.05 = 508,728.30/x
  3. Step 3: Cross multiply
    686,021.10x = 1,030,198.05 × 508,728.30
  4. Step 4: Simplify right side
    686,021.10x = 524,090,902,639.82
  5. Step 5: Solve for x
    x = 524,090,902,639.82/686,021.10
  6. Step 6: Final answer
    x = 763,957.41

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Double scale
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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.