Home / 1,085,913.20-1,628,869.80-707,999.60

Finding the Fourth Proportional to 1,085,913.20, 1,628,869.80 and 707,999.60

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Solution

The fourth proportional to 1,085,913.20, 1,628,869.80 and 707,999.60 is: 1,061,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,913.20 : 1,628,869.80 = 707,999.60 : x
  2. Step 2: Convert to fraction form
    1,085,913.20/1,628,869.80 = 707,999.60/x
  3. Step 3: Cross multiply
    1,085,913.20x = 1,628,869.80 × 707,999.60
  4. Step 4: Simplify right side
    1,085,913.20x = 1,153,239,166,852.08
  5. Step 5: Solve for x
    x = 1,153,239,166,852.08/1,085,913.20
  6. Step 6: Final answer
    x = 1,061,999.40

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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.