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Finding the Fourth Proportional to 590,975.40, 885,150.90 and 485,999.40

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Solution

The fourth proportional to 590,975.40, 885,150.90 and 485,999.40 is: 727,919.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,975.40 : 885,150.90 = 485,999.40 : x
  2. Step 2: Convert to fraction form
    590,975.40/885,150.90 = 485,999.40/x
  3. Step 3: Cross multiply
    590,975.40x = 885,150.90 × 485,999.40
  4. Step 4: Simplify right side
    590,975.40x = 430,182,806,309.46
  5. Step 5: Solve for x
    x = 430,182,806,309.46/590,975.40
  6. Step 6: Final answer
    x = 727,919.99

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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.