Home / 1,336,715.20-2,005,072.80-390,181.60

Finding the Fourth Proportional to 1,336,715.20, 2,005,072.80 and 390,181.60

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Solution

The fourth proportional to 1,336,715.20, 2,005,072.80 and 390,181.60 is: 585,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,715.20 : 2,005,072.80 = 390,181.60 : x
  2. Step 2: Convert to fraction form
    1,336,715.20/2,005,072.80 = 390,181.60/x
  3. Step 3: Cross multiply
    1,336,715.20x = 2,005,072.80 × 390,181.60
  4. Step 4: Simplify right side
    1,336,715.20x = 782,342,513,220.48
  5. Step 5: Solve for x
    x = 782,342,513,220.48/1,336,715.20
  6. Step 6: Final answer
    x = 585,272.40

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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.