Home / 645,261.60-966,740.40-312,103.20

Finding the Fourth Proportional to 645,261.60, 966,740.40 and 312,103.20

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Solution

The fourth proportional to 645,261.60, 966,740.40 and 312,103.20 is: 467,597.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,261.60 : 966,740.40 = 312,103.20 : x
  2. Step 2: Convert to fraction form
    645,261.60/966,740.40 = 312,103.20/x
  3. Step 3: Cross multiply
    645,261.60x = 966,740.40 × 312,103.20
  4. Step 4: Simplify right side
    645,261.60x = 301,722,772,409.28
  5. Step 5: Solve for x
    x = 301,722,772,409.28/645,261.60
  6. Step 6: Final answer
    x = 467,597.60

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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.