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Finding the Fourth Proportional to 707,764.80, 976,630.86 and 401,730.60

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Solution

The fourth proportional to 707,764.80, 976,630.86 and 401,730.60 is: 554,340.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,764.80 : 976,630.86 = 401,730.60 : x
  2. Step 2: Convert to fraction form
    707,764.80/976,630.86 = 401,730.60/x
  3. Step 3: Cross multiply
    707,764.80x = 976,630.86 × 401,730.60
  4. Step 4: Simplify right side
    707,764.80x = 392,342,501,366.32
  5. Step 5: Solve for x
    x = 392,342,501,366.32/707,764.80
  6. Step 6: Final answer
    x = 554,340.23

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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.