Home / 679,949.60-1,019,924.40-280,457.60

Finding the Fourth Proportional to 679,949.60, 1,019,924.40 and 280,457.60

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Solution

The fourth proportional to 679,949.60, 1,019,924.40 and 280,457.60 is: 420,686.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,949.60 : 1,019,924.40 = 280,457.60 : x
  2. Step 2: Convert to fraction form
    679,949.60/1,019,924.40 = 280,457.60/x
  3. Step 3: Cross multiply
    679,949.60x = 1,019,924.40 × 280,457.60
  4. Step 4: Simplify right side
    679,949.60x = 286,045,549,405.44
  5. Step 5: Solve for x
    x = 286,045,549,405.44/679,949.60
  6. Step 6: Final answer
    x = 420,686.40

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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.