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Finding the Fourth Proportional to 566,091.95, 781,206.87 and 311,437.67

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Solution

The fourth proportional to 566,091.95, 781,206.87 and 311,437.67 is: 429,783.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,091.95 : 781,206.87 = 311,437.67 : x
  2. Step 2: Convert to fraction form
    566,091.95/781,206.87 = 311,437.67/x
  3. Step 3: Cross multiply
    566,091.95x = 781,206.87 × 311,437.67
  4. Step 4: Simplify right side
    566,091.95x = 243,297,243,474.76
  5. Step 5: Solve for x
    x = 243,297,243,474.76/566,091.95
  6. Step 6: Final answer
    x = 429,783.97

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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.