Home / 807,798.40-1,211,697.60-409,667.20

Finding the Fourth Proportional to 807,798.40, 1,211,697.60 and 409,667.20

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Solution

The fourth proportional to 807,798.40, 1,211,697.60 and 409,667.20 is: 614,500.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,798.40 : 1,211,697.60 = 409,667.20 : x
  2. Step 2: Convert to fraction form
    807,798.40/1,211,697.60 = 409,667.20/x
  3. Step 3: Cross multiply
    807,798.40x = 1,211,697.60 × 409,667.20
  4. Step 4: Simplify right side
    807,798.40x = 496,392,763,038.72
  5. Step 5: Solve for x
    x = 496,392,763,038.72/807,798.40
  6. Step 6: Final answer
    x = 614,500.80

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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.