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Finding the Fourth Proportional to 606,652.80, 909,979.20 and 395,145.60

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Solution

The fourth proportional to 606,652.80, 909,979.20 and 395,145.60 is: 592,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,652.80 : 909,979.20 = 395,145.60 : x
  2. Step 2: Convert to fraction form
    606,652.80/909,979.20 = 395,145.60/x
  3. Step 3: Cross multiply
    606,652.80x = 909,979.20 × 395,145.60
  4. Step 4: Simplify right side
    606,652.80x = 359,574,276,971.52
  5. Step 5: Solve for x
    x = 359,574,276,971.52/606,652.80
  6. Step 6: Final answer
    x = 592,718.40

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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.