Home / 808,712.40-1,212,485.40-453,835.20

Finding the Fourth Proportional to 808,712.40, 1,212,485.40 and 453,835.20

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Solution

The fourth proportional to 808,712.40, 1,212,485.40 and 453,835.20 is: 680,425.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,712.40 : 1,212,485.40 = 453,835.20 : x
  2. Step 2: Convert to fraction form
    808,712.40/1,212,485.40 = 453,835.20/x
  3. Step 3: Cross multiply
    808,712.40x = 1,212,485.40 × 453,835.20
  4. Step 4: Simplify right side
    808,712.40x = 550,268,554,006.08
  5. Step 5: Solve for x
    x = 550,268,554,006.08/808,712.40
  6. Step 6: Final answer
    x = 680,425.52

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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.