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Finding the Fourth Proportional to 707,640.61, 976,534.38 and 401,714.32

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Solution

The fourth proportional to 707,640.61, 976,534.38 and 401,714.32 is: 554,360.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,640.61 : 976,534.38 = 401,714.32 : x
  2. Step 2: Convert to fraction form
    707,640.61/976,534.38 = 401,714.32/x
  3. Step 3: Cross multiply
    707,640.61x = 976,534.38 × 401,714.32
  4. Step 4: Simplify right side
    707,640.61x = 392,287,844,418.32
  5. Step 5: Solve for x
    x = 392,287,844,418.32/707,640.61
  6. Step 6: Final answer
    x = 554,360.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.