Home / 688,129.35-1,031,774.85-308,976.45

Finding the Fourth Proportional to 688,129.35, 1,031,774.85 and 308,976.45

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Solution

The fourth proportional to 688,129.35, 1,031,774.85 and 308,976.45 is: 463,276.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,129.35 : 1,031,774.85 = 308,976.45 : x
  2. Step 2: Convert to fraction form
    688,129.35/1,031,774.85 = 308,976.45/x
  3. Step 3: Cross multiply
    688,129.35x = 1,031,774.85 × 308,976.45
  4. Step 4: Simplify right side
    688,129.35x = 318,794,130,352.28
  5. Step 5: Solve for x
    x = 318,794,130,352.28/688,129.35
  6. Step 6: Final answer
    x = 463,276.46

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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.