Home / 808,621.60-1,211,182.80-434,207.20

Finding the Fourth Proportional to 808,621.60, 1,211,182.80 and 434,207.20

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Solution

The fourth proportional to 808,621.60, 1,211,182.80 and 434,207.20 is: 650,371.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,621.60 : 1,211,182.80 = 434,207.20 : x
  2. Step 2: Convert to fraction form
    808,621.60/1,211,182.80 = 434,207.20/x
  3. Step 3: Cross multiply
    808,621.60x = 1,211,182.80 × 434,207.20
  4. Step 4: Simplify right side
    808,621.60x = 525,904,292,276.16
  5. Step 5: Solve for x
    x = 525,904,292,276.16/808,621.60
  6. Step 6: Final answer
    x = 650,371.31

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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.