Home / 808,639.60-1,212,959.40-740,405.20

Finding the Fourth Proportional to 808,639.60, 1,212,959.40 and 740,405.20

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Solution

The fourth proportional to 808,639.60, 1,212,959.40 and 740,405.20 is: 1,110,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,639.60 : 1,212,959.40 = 740,405.20 : x
  2. Step 2: Convert to fraction form
    808,639.60/1,212,959.40 = 740,405.20/x
  3. Step 3: Cross multiply
    808,639.60x = 1,212,959.40 × 740,405.20
  4. Step 4: Simplify right side
    808,639.60x = 898,081,447,148.88
  5. Step 5: Solve for x
    x = 898,081,447,148.88/808,639.60
  6. Step 6: Final answer
    x = 1,110,607.80

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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.