Home / 939,472.64-1,409,205.15-340,293.56

Finding the Fourth Proportional to 939,472.64, 1,409,205.15 and 340,293.56

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Solution

The fourth proportional to 939,472.64, 1,409,205.15 and 340,293.56 is: 510,438.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,472.64 : 1,409,205.15 = 340,293.56 : x
  2. Step 2: Convert to fraction form
    939,472.64/1,409,205.15 = 340,293.56/x
  3. Step 3: Cross multiply
    939,472.64x = 1,409,205.15 × 340,293.56
  4. Step 4: Simplify right side
    939,472.64x = 479,543,437,263.83
  5. Step 5: Solve for x
    x = 479,543,437,263.83/939,472.64
  6. Step 6: Final answer
    x = 510,438.96

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.