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Finding the Fourth Proportional to 520,422.91, 780,060.45 and 340,433.62

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Solution

The fourth proportional to 520,422.91, 780,060.45 and 340,433.62 is: 510,275.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,422.91 : 780,060.45 = 340,433.62 : x
  2. Step 2: Convert to fraction form
    520,422.91/780,060.45 = 340,433.62/x
  3. Step 3: Cross multiply
    520,422.91x = 780,060.45 × 340,433.62
  4. Step 4: Simplify right side
    520,422.91x = 265,558,802,812.33
  5. Step 5: Solve for x
    x = 265,558,802,812.33/520,422.91
  6. Step 6: Final answer
    x = 510,275.00

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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.