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Finding the Fourth Proportional to 534,935.40, 802,403.10 and 345,978.60

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Solution

The fourth proportional to 534,935.40, 802,403.10 and 345,978.60 is: 518,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,935.40 : 802,403.10 = 345,978.60 : x
  2. Step 2: Convert to fraction form
    534,935.40/802,403.10 = 345,978.60/x
  3. Step 3: Cross multiply
    534,935.40x = 802,403.10 × 345,978.60
  4. Step 4: Simplify right side
    534,935.40x = 277,614,301,173.66
  5. Step 5: Solve for x
    x = 277,614,301,173.66/534,935.40
  6. Step 6: Final answer
    x = 518,967.90

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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.