Home / 684,148.80-1,026,514.80-431,623.20

Finding the Fourth Proportional to 684,148.80, 1,026,514.80 and 431,623.20

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Solution

The fourth proportional to 684,148.80, 1,026,514.80 and 431,623.20 is: 647,618.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,148.80 : 1,026,514.80 = 431,623.20 : x
  2. Step 2: Convert to fraction form
    684,148.80/1,026,514.80 = 431,623.20/x
  3. Step 3: Cross multiply
    684,148.80x = 1,026,514.80 × 431,623.20
  4. Step 4: Simplify right side
    684,148.80x = 443,067,602,823.36
  5. Step 5: Solve for x
    x = 443,067,602,823.36/684,148.80
  6. Step 6: Final answer
    x = 647,618.77

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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.