Home / 1,272,467.34-1,908,684.19-312,931.21

Finding the Fourth Proportional to 1,272,467.34, 1,908,684.19 and 312,931.21

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Solution

The fourth proportional to 1,272,467.34, 1,908,684.19 and 312,931.21 is: 469,392.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,467.34 : 1,908,684.19 = 312,931.21 : x
  2. Step 2: Convert to fraction form
    1,272,467.34/1,908,684.19 = 312,931.21/x
  3. Step 3: Cross multiply
    1,272,467.34x = 1,908,684.19 × 312,931.21
  4. Step 4: Simplify right side
    1,272,467.34x = 597,286,853,084.57
  5. Step 5: Solve for x
    x = 597,286,853,084.57/1,272,467.34
  6. Step 6: Final answer
    x = 469,392.68

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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.