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Finding the Fourth Proportional to 584,047.75, 805,985.94 and 315,775.75

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Solution

The fourth proportional to 584,047.75, 805,985.94 and 315,775.75 is: 435,770.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,047.75 : 805,985.94 = 315,775.75 : x
  2. Step 2: Convert to fraction form
    584,047.75/805,985.94 = 315,775.75/x
  3. Step 3: Cross multiply
    584,047.75x = 805,985.94 × 315,775.75
  4. Step 4: Simplify right side
    584,047.75x = 254,510,814,692.96
  5. Step 5: Solve for x
    x = 254,510,814,692.96/584,047.75
  6. Step 6: Final answer
    x = 435,770.56

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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.