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Finding the Fourth Proportional to 559,662.77, 772,337.28 and 317,958.60

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Solution

The fourth proportional to 559,662.77, 772,337.28 and 317,958.60 is: 438,784.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,662.77 : 772,337.28 = 317,958.60 : x
  2. Step 2: Convert to fraction form
    559,662.77/772,337.28 = 317,958.60/x
  3. Step 3: Cross multiply
    559,662.77x = 772,337.28 × 317,958.60
  4. Step 4: Simplify right side
    559,662.77x = 245,571,280,276.61
  5. Step 5: Solve for x
    x = 245,571,280,276.61/559,662.77
  6. Step 6: Final answer
    x = 438,784.38

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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.