Home / 878,421.28-1,212,188.88-476,004.64

Finding the Fourth Proportional to 878,421.28, 1,212,188.88 and 476,004.64

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Solution

The fourth proportional to 878,421.28, 1,212,188.88 and 476,004.64 is: 656,868.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,421.28 : 1,212,188.88 = 476,004.64 : x
  2. Step 2: Convert to fraction form
    878,421.28/1,212,188.88 = 476,004.64/x
  3. Step 3: Cross multiply
    878,421.28x = 1,212,188.88 × 476,004.64
  4. Step 4: Simplify right side
    878,421.28x = 577,007,531,436.40
  5. Step 5: Solve for x
    x = 577,007,531,436.40/878,421.28
  6. Step 6: Final answer
    x = 656,868.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.