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Finding the Fourth Proportional to 708,292.73, 977,415.48 and 385,995.84

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Solution

The fourth proportional to 708,292.73, 977,415.48 and 385,995.84 is: 532,658.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,292.73 : 977,415.48 = 385,995.84 : x
  2. Step 2: Convert to fraction form
    708,292.73/977,415.48 = 385,995.84/x
  3. Step 3: Cross multiply
    708,292.73x = 977,415.48 × 385,995.84
  4. Step 4: Simplify right side
    708,292.73x = 377,278,309,231.60
  5. Step 5: Solve for x
    x = 377,278,309,231.60/708,292.73
  6. Step 6: Final answer
    x = 532,658.74

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Double scale
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Similar ratio
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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.