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Finding the Fourth Proportional to 707,756.40, 976,714.20 and 401,822.64

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Solution

The fourth proportional to 707,756.40, 976,714.20 and 401,822.64 is: 554,521.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,756.40 : 976,714.20 = 401,822.64 : x
  2. Step 2: Convert to fraction form
    707,756.40/976,714.20 = 401,822.64/x
  3. Step 3: Cross multiply
    707,756.40x = 976,714.20 × 401,822.64
  4. Step 4: Simplify right side
    707,756.40x = 392,465,878,369.49
  5. Step 5: Solve for x
    x = 392,465,878,369.49/707,756.40
  6. Step 6: Final answer
    x = 554,521.13

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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.