Home / 689,980.60-1,034,970.90-477,404.20

Finding the Fourth Proportional to 689,980.60, 1,034,970.90 and 477,404.20

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Solution

The fourth proportional to 689,980.60, 1,034,970.90 and 477,404.20 is: 716,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,980.60 : 1,034,970.90 = 477,404.20 : x
  2. Step 2: Convert to fraction form
    689,980.60/1,034,970.90 = 477,404.20/x
  3. Step 3: Cross multiply
    689,980.60x = 1,034,970.90 × 477,404.20
  4. Step 4: Simplify right side
    689,980.60x = 494,099,454,537.78
  5. Step 5: Solve for x
    x = 494,099,454,537.78/689,980.60
  6. Step 6: Final answer
    x = 716,106.30

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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.