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Finding the Fourth Proportional to 528,039.10, 790,309.05 and 486,048.70

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Solution

The fourth proportional to 528,039.10, 790,309.05 and 486,048.70 is: 727,462.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,039.10 : 790,309.05 = 486,048.70 : x
  2. Step 2: Convert to fraction form
    528,039.10/790,309.05 = 486,048.70/x
  3. Step 3: Cross multiply
    528,039.10x = 790,309.05 × 486,048.70
  4. Step 4: Simplify right side
    528,039.10x = 384,128,686,350.74
  5. Step 5: Solve for x
    x = 384,128,686,350.74/528,039.10
  6. Step 6: Final answer
    x = 727,462.58

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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.