Home / 1,375,411.20-2,063,116.80-428,774.40

Finding the Fourth Proportional to 1,375,411.20, 2,063,116.80 and 428,774.40

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Solution

The fourth proportional to 1,375,411.20, 2,063,116.80 and 428,774.40 is: 643,161.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,411.20 : 2,063,116.80 = 428,774.40 : x
  2. Step 2: Convert to fraction form
    1,375,411.20/2,063,116.80 = 428,774.40/x
  3. Step 3: Cross multiply
    1,375,411.20x = 2,063,116.80 × 428,774.40
  4. Step 4: Simplify right side
    1,375,411.20x = 884,611,668,049.92
  5. Step 5: Solve for x
    x = 884,611,668,049.92/1,375,411.20
  6. Step 6: Final answer
    x = 643,161.60

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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.