Home / 780,360.80-1,076,985.30-440,850.92

Finding the Fourth Proportional to 780,360.80, 1,076,985.30 and 440,850.92

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Solution

The fourth proportional to 780,360.80, 1,076,985.30 and 440,850.92 is: 608,423.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,360.80 : 1,076,985.30 = 440,850.92 : x
  2. Step 2: Convert to fraction form
    780,360.80/1,076,985.30 = 440,850.92/x
  3. Step 3: Cross multiply
    780,360.80x = 1,076,985.30 × 440,850.92
  4. Step 4: Simplify right side
    780,360.80x = 474,789,960,331.48
  5. Step 5: Solve for x
    x = 474,789,960,331.48/780,360.80
  6. Step 6: Final answer
    x = 608,423.64

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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.