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Finding the Fourth Proportional to 522,819.36, 721,710.54 and 353,283.12

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Solution

The fourth proportional to 522,819.36, 721,710.54 and 353,283.12 is: 487,679.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,819.36 : 721,710.54 = 353,283.12 : x
  2. Step 2: Convert to fraction form
    522,819.36/721,710.54 = 353,283.12/x
  3. Step 3: Cross multiply
    522,819.36x = 721,710.54 × 353,283.12
  4. Step 4: Simplify right side
    522,819.36x = 254,968,151,308.09
  5. Step 5: Solve for x
    x = 254,968,151,308.09/522,819.36
  6. Step 6: Final answer
    x = 487,679.25

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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.