Home / 921,811.20-1,382,486.40-353,068.80

Finding the Fourth Proportional to 921,811.20, 1,382,486.40 and 353,068.80

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Solution

The fourth proportional to 921,811.20, 1,382,486.40 and 353,068.80 is: 529,514.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,811.20 : 1,382,486.40 = 353,068.80 : x
  2. Step 2: Convert to fraction form
    921,811.20/1,382,486.40 = 353,068.80/x
  3. Step 3: Cross multiply
    921,811.20x = 1,382,486.40 × 353,068.80
  4. Step 4: Simplify right side
    921,811.20x = 488,112,814,264.32
  5. Step 5: Solve for x
    x = 488,112,814,264.32/921,811.20
  6. Step 6: Final answer
    x = 529,514.95

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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.