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Finding the Fourth Proportional to 606,421.60, 909,632.40 and 370,225.60

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Solution

The fourth proportional to 606,421.60, 909,632.40 and 370,225.60 is: 555,338.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,421.60 : 909,632.40 = 370,225.60 : x
  2. Step 2: Convert to fraction form
    606,421.60/909,632.40 = 370,225.60/x
  3. Step 3: Cross multiply
    606,421.60x = 909,632.40 × 370,225.60
  4. Step 4: Simplify right side
    606,421.60x = 336,769,201,069.44
  5. Step 5: Solve for x
    x = 336,769,201,069.44/606,421.60
  6. Step 6: Final answer
    x = 555,338.40

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Double scale
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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.