Home / 1,118,417.20-1,677,188.40-408,079.60

Finding the Fourth Proportional to 1,118,417.20, 1,677,188.40 and 408,079.60

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Solution

The fourth proportional to 1,118,417.20, 1,677,188.40 and 408,079.60 is: 611,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,417.20 : 1,677,188.40 = 408,079.60 : x
  2. Step 2: Convert to fraction form
    1,118,417.20/1,677,188.40 = 408,079.60/x
  3. Step 3: Cross multiply
    1,118,417.20x = 1,677,188.40 × 408,079.60
  4. Step 4: Simplify right side
    1,118,417.20x = 684,426,371,396.64
  5. Step 5: Solve for x
    x = 684,426,371,396.64/1,118,417.20
  6. Step 6: Final answer
    x = 611,959.80

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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.