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Finding the Fourth Proportional to 679,143.48, 937,212.48 and 369,043.32

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Solution

The fourth proportional to 679,143.48, 937,212.48 and 369,043.32 is: 509,276.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,143.48 : 937,212.48 = 369,043.32 : x
  2. Step 2: Convert to fraction form
    679,143.48/937,212.48 = 369,043.32/x
  3. Step 3: Cross multiply
    679,143.48x = 937,212.48 × 369,043.32
  4. Step 4: Simplify right side
    679,143.48x = 345,872,005,164.63
  5. Step 5: Solve for x
    x = 345,872,005,164.63/679,143.48
  6. Step 6: Final answer
    x = 509,276.78

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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.