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Finding the Fourth Proportional to 569,950.76, 786,508.42 and 311,826.44

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Solution

The fourth proportional to 569,950.76, 786,508.42 and 311,826.44 is: 430,307.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,950.76 : 786,508.42 = 311,826.44 : x
  2. Step 2: Convert to fraction form
    569,950.76/786,508.42 = 311,826.44/x
  3. Step 3: Cross multiply
    569,950.76x = 786,508.42 × 311,826.44
  4. Step 4: Simplify right side
    569,950.76x = 245,254,120,638.63
  5. Step 5: Solve for x
    x = 245,254,120,638.63/569,950.76
  6. Step 6: Final answer
    x = 430,307.56

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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.