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Finding the Fourth Proportional to 606,959.80, 909,346.20 and 290,719.60

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Solution

The fourth proportional to 606,959.80, 909,346.20 and 290,719.60 is: 435,555.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,959.80 : 909,346.20 = 290,719.60 : x
  2. Step 2: Convert to fraction form
    606,959.80/909,346.20 = 290,719.60/x
  3. Step 3: Cross multiply
    606,959.80x = 909,346.20 × 290,719.60
  4. Step 4: Simplify right side
    606,959.80x = 264,364,763,525.52
  5. Step 5: Solve for x
    x = 264,364,763,525.52/606,959.80
  6. Step 6: Final answer
    x = 435,555.64

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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.