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Finding the Fourth Proportional to 520,654.12, 779,720.41 and 360,280.47

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Solution

The fourth proportional to 520,654.12, 779,720.41 and 360,280.47 is: 539,548.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,654.12 : 779,720.41 = 360,280.47 : x
  2. Step 2: Convert to fraction form
    520,654.12/779,720.41 = 360,280.47/x
  3. Step 3: Cross multiply
    520,654.12x = 779,720.41 × 360,280.47
  4. Step 4: Simplify right side
    520,654.12x = 280,918,035,783.39
  5. Step 5: Solve for x
    x = 280,918,035,783.39/520,654.12
  6. Step 6: Final answer
    x = 539,548.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.