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Finding the Fourth Proportional to 612,558.11, 845,349.51 and 340,637.47

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Solution

The fourth proportional to 612,558.11, 845,349.51 and 340,637.47 is: 470,090.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,558.11 : 845,349.51 = 340,637.47 : x
  2. Step 2: Convert to fraction form
    612,558.11/845,349.51 = 340,637.47/x
  3. Step 3: Cross multiply
    612,558.11x = 845,349.51 × 340,637.47
  4. Step 4: Simplify right side
    612,558.11x = 287,957,717,516.16
  5. Step 5: Solve for x
    x = 287,957,717,516.16/612,558.11
  6. Step 6: Final answer
    x = 470,090.45

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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.