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Finding the Fourth Proportional to 612,647.93, 845,475.71 and 340,727.29

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Solution

The fourth proportional to 612,647.93, 845,475.71 and 340,727.29 is: 470,215.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,647.93 : 845,475.71 = 340,727.29 : x
  2. Step 2: Convert to fraction form
    612,647.93/845,475.71 = 340,727.29/x
  3. Step 3: Cross multiply
    612,647.93x = 845,475.71 × 340,727.29
  4. Step 4: Simplify right side
    612,647.93x = 288,076,643,611.80
  5. Step 5: Solve for x
    x = 288,076,643,611.80/612,647.93
  6. Step 6: Final answer
    x = 470,215.65

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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.