Home / 840,987.50-1,160,487.90-468,421.91

Finding the Fourth Proportional to 840,987.50, 1,160,487.90 and 468,421.91

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Solution

The fourth proportional to 840,987.50, 1,160,487.90 and 468,421.91 is: 646,380.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,987.50 : 1,160,487.90 = 468,421.91 : x
  2. Step 2: Convert to fraction form
    840,987.50/1,160,487.90 = 468,421.91/x
  3. Step 3: Cross multiply
    840,987.50x = 1,160,487.90 × 468,421.91
  4. Step 4: Simplify right side
    840,987.50x = 543,597,954,001.90
  5. Step 5: Solve for x
    x = 543,597,954,001.90/840,987.50
  6. Step 6: Final answer
    x = 646,380.54

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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.