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Finding the Fourth Proportional to 569,754.76, 786,229.60 and 311,580.40

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Solution

The fourth proportional to 569,754.76, 786,229.60 and 311,580.40 is: 429,963.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,754.76 : 786,229.60 = 311,580.40 : x
  2. Step 2: Convert to fraction form
    569,754.76/786,229.60 = 311,580.40/x
  3. Step 3: Cross multiply
    569,754.76x = 786,229.60 × 311,580.40
  4. Step 4: Simplify right side
    569,754.76x = 244,973,733,259.84
  5. Step 5: Solve for x
    x = 244,973,733,259.84/569,754.76
  6. Step 6: Final answer
    x = 429,963.47

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Double scale
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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.