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Finding the Fourth Proportional to 612,648.93, 845,477.09 and 340,728.29

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Solution

The fourth proportional to 612,648.93, 845,477.09 and 340,728.29 is: 470,217.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,648.93 : 845,477.09 = 340,728.29 : x
  2. Step 2: Convert to fraction form
    612,648.93/845,477.09 = 340,728.29/x
  3. Step 3: Cross multiply
    612,648.93x = 845,477.09 × 340,728.29
  4. Step 4: Simplify right side
    612,648.93x = 288,077,963,109.88
  5. Step 5: Solve for x
    x = 288,077,963,109.88/612,648.93
  6. Step 6: Final answer
    x = 470,217.03

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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.