Home / 780,355.30-1,076,977.71-440,845.42

Finding the Fourth Proportional to 780,355.30, 1,076,977.71 and 440,845.42

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Solution

The fourth proportional to 780,355.30, 1,076,977.71 and 440,845.42 is: 608,416.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,355.30 : 1,076,977.71 = 440,845.42 : x
  2. Step 2: Convert to fraction form
    780,355.30/1,076,977.71 = 440,845.42/x
  3. Step 3: Cross multiply
    780,355.30x = 1,076,977.71 × 440,845.42
  4. Step 4: Simplify right side
    780,355.30x = 474,780,690,895.59
  5. Step 5: Solve for x
    x = 474,780,690,895.59/780,355.30
  6. Step 6: Final answer
    x = 608,416.05

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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.