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Finding the Fourth Proportional to 559,669.74, 772,346.80 and 317,965.58

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Solution

The fourth proportional to 559,669.74, 772,346.80 and 317,965.58 is: 438,793.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,669.74 : 772,346.80 = 317,965.58 : x
  2. Step 2: Convert to fraction form
    559,669.74/772,346.80 = 317,965.58/x
  3. Step 3: Cross multiply
    559,669.74x = 772,346.80 × 317,965.58
  4. Step 4: Simplify right side
    559,669.74x = 245,579,693,694.39
  5. Step 5: Solve for x
    x = 245,579,693,694.39/559,669.74
  6. Step 6: Final answer
    x = 438,793.95

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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.