Home / 756,288.48-1,134,432.70-518,911.50

Finding the Fourth Proportional to 756,288.48, 1,134,432.70 and 518,911.50

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Solution

The fourth proportional to 756,288.48, 1,134,432.70 and 518,911.50 is: 778,367.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,288.48 : 1,134,432.70 = 518,911.50 : x
  2. Step 2: Convert to fraction form
    756,288.48/1,134,432.70 = 518,911.50/x
  3. Step 3: Cross multiply
    756,288.48x = 1,134,432.70 × 518,911.50
  4. Step 4: Simplify right side
    756,288.48x = 588,670,174,006.05
  5. Step 5: Solve for x
    x = 588,670,174,006.05/756,288.48
  6. Step 6: Final answer
    x = 778,367.24

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Double scale
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Similar ratio
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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.