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Finding the Fourth Proportional to 569,748.63, 786,266.90 and 311,649.83

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Solution

The fourth proportional to 569,748.63, 786,266.90 and 311,649.83 is: 430,084.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,748.63 : 786,266.90 = 311,649.83 : x
  2. Step 2: Convert to fraction form
    569,748.63/786,266.90 = 311,649.83/x
  3. Step 3: Cross multiply
    569,748.63x = 786,266.90 × 311,649.83
  4. Step 4: Simplify right side
    569,748.63x = 245,039,945,719.63
  5. Step 5: Solve for x
    x = 245,039,945,719.63/569,748.63
  6. Step 6: Final answer
    x = 430,084.31

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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.