Home / 780,277.20-1,076,848.84-440,807.76

Finding the Fourth Proportional to 780,277.20, 1,076,848.84 and 440,807.76

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Solution

The fourth proportional to 780,277.20, 1,076,848.84 and 440,807.76 is: 608,352.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,277.20 : 1,076,848.84 = 440,807.76 : x
  2. Step 2: Convert to fraction form
    780,277.20/1,076,848.84 = 440,807.76/x
  3. Step 3: Cross multiply
    780,277.20x = 1,076,848.84 × 440,807.76
  4. Step 4: Simplify right side
    780,277.20x = 474,683,325,019.00
  5. Step 5: Solve for x
    x = 474,683,325,019.00/780,277.20
  6. Step 6: Final answer
    x = 608,352.17

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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.