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Finding the Fourth Proportional to 565,090.75, 779,825.54 and 310,458.34

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Solution

The fourth proportional to 565,090.75, 779,825.54 and 310,458.34 is: 428,432.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,090.75 : 779,825.54 = 310,458.34 : x
  2. Step 2: Convert to fraction form
    565,090.75/779,825.54 = 310,458.34/x
  3. Step 3: Cross multiply
    565,090.75x = 779,825.54 × 310,458.34
  4. Step 4: Simplify right side
    565,090.75x = 242,103,342,638.00
  5. Step 5: Solve for x
    x = 242,103,342,638.00/565,090.75
  6. Step 6: Final answer
    x = 428,432.68

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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.