Home / 780,348.25-1,076,968.11-440,838.37

Finding the Fourth Proportional to 780,348.25, 1,076,968.11 and 440,838.37

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Solution

The fourth proportional to 780,348.25, 1,076,968.11 and 440,838.37 is: 608,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,348.25 : 1,076,968.11 = 440,838.37 : x
  2. Step 2: Convert to fraction form
    780,348.25/1,076,968.11 = 440,838.37/x
  3. Step 3: Cross multiply
    780,348.25x = 1,076,968.11 × 440,838.37
  4. Step 4: Simplify right side
    780,348.25x = 474,768,866,154.38
  5. Step 5: Solve for x
    x = 474,768,866,154.38/780,348.25
  6. Step 6: Final answer
    x = 608,406.40

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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.