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Finding the Fourth Proportional to 539,224.74, 744,153.89 and 309,853.98

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Solution

The fourth proportional to 539,224.74, 744,153.89 and 309,853.98 is: 427,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,224.74 : 744,153.89 = 309,853.98 : x
  2. Step 2: Convert to fraction form
    539,224.74/744,153.89 = 309,853.98/x
  3. Step 3: Cross multiply
    539,224.74x = 744,153.89 × 309,853.98
  4. Step 4: Simplify right side
    539,224.74x = 230,579,042,999.71
  5. Step 5: Solve for x
    x = 230,579,042,999.71/539,224.74
  6. Step 6: Final answer
    x = 427,612.14

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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.