Home / 497,779.60-746,669.40-420,019.60

Finding the Fourth Proportional to 497,779.60, 746,669.40 and 420,019.60

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Solution

The fourth proportional to 497,779.60, 746,669.40 and 420,019.60 is: 630,029.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,779.60 : 746,669.40 = 420,019.60 : x
  2. Step 2: Convert to fraction form
    497,779.60/746,669.40 = 420,019.60/x
  3. Step 3: Cross multiply
    497,779.60x = 746,669.40 × 420,019.60
  4. Step 4: Simplify right side
    497,779.60x = 313,615,782,720.24
  5. Step 5: Solve for x
    x = 313,615,782,720.24/497,779.60
  6. Step 6: Final answer
    x = 630,029.40

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Similar ratio
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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.