Home / 808,521.60-1,211,470.20-508,465.20

Finding the Fourth Proportional to 808,521.60, 1,211,470.20 and 508,465.20

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Solution

The fourth proportional to 808,521.60, 1,211,470.20 and 508,465.20 is: 761,872.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,521.60 : 1,211,470.20 = 508,465.20 : x
  2. Step 2: Convert to fraction form
    808,521.60/1,211,470.20 = 508,465.20/x
  3. Step 3: Cross multiply
    808,521.60x = 1,211,470.20 × 508,465.20
  4. Step 4: Simplify right side
    808,521.60x = 615,990,437,537.04
  5. Step 5: Solve for x
    x = 615,990,437,537.04/808,521.60
  6. Step 6: Final answer
    x = 761,872.58

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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.