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Finding the Fourth Proportional to 489,851.60, 734,777.40 and 427,643.60

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Solution

The fourth proportional to 489,851.60, 734,777.40 and 427,643.60 is: 641,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,851.60 : 734,777.40 = 427,643.60 : x
  2. Step 2: Convert to fraction form
    489,851.60/734,777.40 = 427,643.60/x
  3. Step 3: Cross multiply
    489,851.60x = 734,777.40 × 427,643.60
  4. Step 4: Simplify right side
    489,851.60x = 314,222,852,534.64
  5. Step 5: Solve for x
    x = 314,222,852,534.64/489,851.60
  6. Step 6: Final answer
    x = 641,465.40

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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.