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Finding the Fourth Proportional to 674,927.76, 931,419.76 and 373,141.20

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Solution

The fourth proportional to 674,927.76, 931,419.76 and 373,141.20 is: 514,945.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,927.76 : 931,419.76 = 373,141.20 : x
  2. Step 2: Convert to fraction form
    674,927.76/931,419.76 = 373,141.20/x
  3. Step 3: Cross multiply
    674,927.76x = 931,419.76 × 373,141.20
  4. Step 4: Simplify right side
    674,927.76x = 347,551,086,950.11
  5. Step 5: Solve for x
    x = 347,551,086,950.11/674,927.76
  6. Step 6: Final answer
    x = 514,945.61

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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.