Home / 806,739.60-1,209,979.80-245,643.60

Finding the Fourth Proportional to 806,739.60, 1,209,979.80 and 245,643.60

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Solution

The fourth proportional to 806,739.60, 1,209,979.80 and 245,643.60 is: 368,425.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,739.60 : 1,209,979.80 = 245,643.60 : x
  2. Step 2: Convert to fraction form
    806,739.60/1,209,979.80 = 245,643.60/x
  3. Step 3: Cross multiply
    806,739.60x = 1,209,979.80 × 245,643.60
  4. Step 4: Simplify right side
    806,739.60x = 297,223,793,999.28
  5. Step 5: Solve for x
    x = 297,223,793,999.28/806,739.60
  6. Step 6: Final answer
    x = 368,425.94

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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.