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Finding the Fourth Proportional to 612,659.40, 845,420.97 and 340,727.82

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Solution

The fourth proportional to 612,659.40, 845,420.97 and 340,727.82 is: 470,177.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,659.40 : 845,420.97 = 340,727.82 : x
  2. Step 2: Convert to fraction form
    612,659.40/845,420.97 = 340,727.82/x
  3. Step 3: Cross multiply
    612,659.40x = 845,420.97 × 340,727.82
  4. Step 4: Simplify right side
    612,659.40x = 288,058,444,090.39
  5. Step 5: Solve for x
    x = 288,058,444,090.39/612,659.40
  6. Step 6: Final answer
    x = 470,177.14

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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.