Home / 779,455.80-1,168,308.90-330,100.20

Finding the Fourth Proportional to 779,455.80, 1,168,308.90 and 330,100.20

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Solution

The fourth proportional to 779,455.80, 1,168,308.90 and 330,100.20 is: 494,779.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,455.80 : 1,168,308.90 = 330,100.20 : x
  2. Step 2: Convert to fraction form
    779,455.80/1,168,308.90 = 330,100.20/x
  3. Step 3: Cross multiply
    779,455.80x = 1,168,308.90 × 330,100.20
  4. Step 4: Simplify right side
    779,455.80x = 385,659,001,551.78
  5. Step 5: Solve for x
    x = 385,659,001,551.78/779,455.80
  6. Step 6: Final answer
    x = 494,779.82

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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.