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Finding the Fourth Proportional to 519,988, 779,883.36 and 253,480.48

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Solution

The fourth proportional to 519,988, 779,883.36 and 253,480.48 is: 380,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,988 : 779,883.36 = 253,480.48 : x
  2. Step 2: Convert to fraction form
    519,988/779,883.36 = 253,480.48/x
  3. Step 3: Cross multiply
    519,988x = 779,883.36 × 253,480.48
  4. Step 4: Simplify right side
    519,988x = 197,685,208,436.81
  5. Step 5: Solve for x
    x = 197,685,208,436.81/519,988
  6. Step 6: Final answer
    x = 380,172.64

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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.