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Finding the Fourth Proportional to 565,502.52, 780,394.32 and 310,855.26

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Solution

The fourth proportional to 565,502.52, 780,394.32 and 310,855.26 is: 428,980.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,502.52 : 780,394.32 = 310,855.26 : x
  2. Step 2: Convert to fraction form
    565,502.52/780,394.32 = 310,855.26/x
  3. Step 3: Cross multiply
    565,502.52x = 780,394.32 × 310,855.26
  4. Step 4: Simplify right side
    565,502.52x = 242,589,679,246.12
  5. Step 5: Solve for x
    x = 242,589,679,246.12/565,502.52
  6. Step 6: Final answer
    x = 428,980.72

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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.