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Finding the Fourth Proportional to 514,579.20, 710,119.32 and 313,375.20

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Solution

The fourth proportional to 514,579.20, 710,119.32 and 313,375.20 is: 432,457.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,579.20 : 710,119.32 = 313,375.20 : x
  2. Step 2: Convert to fraction form
    514,579.20/710,119.32 = 313,375.20/x
  3. Step 3: Cross multiply
    514,579.20x = 710,119.32 × 313,375.20
  4. Step 4: Simplify right side
    514,579.20x = 222,533,783,928.86
  5. Step 5: Solve for x
    x = 222,533,783,928.86/514,579.20
  6. Step 6: Final answer
    x = 432,457.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.