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Finding the Fourth Proportional to 519,264.60, 716,590.62 and 289,843.80

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Solution

The fourth proportional to 519,264.60, 716,590.62 and 289,843.80 is: 399,987.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,264.60 : 716,590.62 = 289,843.80 : x
  2. Step 2: Convert to fraction form
    519,264.60/716,590.62 = 289,843.80/x
  3. Step 3: Cross multiply
    519,264.60x = 716,590.62 × 289,843.80
  4. Step 4: Simplify right side
    519,264.60x = 207,699,348,345.16
  5. Step 5: Solve for x
    x = 207,699,348,345.16/519,264.60
  6. Step 6: Final answer
    x = 399,987.50

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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.