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Finding the Fourth Proportional to 567,019.55, 782,486.94 and 312,370.74

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Solution

The fourth proportional to 567,019.55, 782,486.94 and 312,370.74 is: 431,071.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,019.55 : 782,486.94 = 312,370.74 : x
  2. Step 2: Convert to fraction form
    567,019.55/782,486.94 = 312,370.74/x
  3. Step 3: Cross multiply
    567,019.55x = 782,486.94 × 312,370.74
  4. Step 4: Simplify right side
    567,019.55x = 244,426,025,659.53
  5. Step 5: Solve for x
    x = 244,426,025,659.53/567,019.55
  6. Step 6: Final answer
    x = 431,071.60

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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.