Home / 1,286,645.40-1,929,384.90-487,661.40

Finding the Fourth Proportional to 1,286,645.40, 1,929,384.90 and 487,661.40

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Solution

The fourth proportional to 1,286,645.40, 1,929,384.90 and 487,661.40 is: 731,271.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,645.40 : 1,929,384.90 = 487,661.40 : x
  2. Step 2: Convert to fraction form
    1,286,645.40/1,929,384.90 = 487,661.40/x
  3. Step 3: Cross multiply
    1,286,645.40x = 1,929,384.90 × 487,661.40
  4. Step 4: Simplify right side
    1,286,645.40x = 940,886,541,472.86
  5. Step 5: Solve for x
    x = 940,886,541,472.86/1,286,645.40
  6. Step 6: Final answer
    x = 731,271.06

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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.