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Finding the Fourth Proportional to 707,630.12, 976,519.90 and 401,703.83

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Solution

The fourth proportional to 707,630.12, 976,519.90 and 401,703.83 is: 554,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,630.12 : 976,519.90 = 401,703.83 : x
  2. Step 2: Convert to fraction form
    707,630.12/976,519.90 = 401,703.83/x
  3. Step 3: Cross multiply
    707,630.12x = 976,519.90 × 401,703.83
  4. Step 4: Simplify right side
    707,630.12x = 392,271,783,901.22
  5. Step 5: Solve for x
    x = 392,271,783,901.22/707,630.12
  6. Step 6: Final answer
    x = 554,345.80

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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.