Home / 1,118,415.20-1,677,185.40-408,077.60

Finding the Fourth Proportional to 1,118,415.20, 1,677,185.40 and 408,077.60

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Solution

The fourth proportional to 1,118,415.20, 1,677,185.40 and 408,077.60 is: 611,956.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,415.20 : 1,677,185.40 = 408,077.60 : x
  2. Step 2: Convert to fraction form
    1,118,415.20/1,677,185.40 = 408,077.60/x
  3. Step 3: Cross multiply
    1,118,415.20x = 1,677,185.40 × 408,077.60
  4. Step 4: Simplify right side
    1,118,415.20x = 684,421,792,787.04
  5. Step 5: Solve for x
    x = 684,421,792,787.04/1,118,415.20
  6. Step 6: Final answer
    x = 611,956.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.