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Finding the Fourth Proportional to 584,011.75, 805,936.40 and 315,739.75

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Solution

The fourth proportional to 584,011.75, 805,936.40 and 315,739.75 is: 435,720.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,011.75 : 805,936.40 = 315,739.75 : x
  2. Step 2: Convert to fraction form
    584,011.75/805,936.40 = 315,739.75/x
  3. Step 3: Cross multiply
    584,011.75x = 805,936.40 × 315,739.75
  4. Step 4: Simplify right side
    584,011.75x = 254,466,157,451.90
  5. Step 5: Solve for x
    x = 254,466,157,451.90/584,011.75
  6. Step 6: Final answer
    x = 435,720.96

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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.