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Finding the Fourth Proportional to 565,191, 779,963.44 and 310,542.20

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Solution

The fourth proportional to 565,191, 779,963.44 and 310,542.20 is: 428,548.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,191 : 779,963.44 = 310,542.20 : x
  2. Step 2: Convert to fraction form
    565,191/779,963.44 = 310,542.20/x
  3. Step 3: Cross multiply
    565,191x = 779,963.44 × 310,542.20
  4. Step 4: Simplify right side
    565,191x = 242,211,562,577.17
  5. Step 5: Solve for x
    x = 242,211,562,577.17/565,191
  6. Step 6: Final answer
    x = 428,548.16

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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.