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Finding the Fourth Proportional to 612,435.48, 845,160.10 and 340,494.72

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Solution

The fourth proportional to 612,435.48, 845,160.10 and 340,494.72 is: 469,882.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,435.48 : 845,160.10 = 340,494.72 : x
  2. Step 2: Convert to fraction form
    612,435.48/845,160.10 = 340,494.72/x
  3. Step 3: Cross multiply
    612,435.48x = 845,160.10 × 340,494.72
  4. Step 4: Simplify right side
    612,435.48x = 287,772,551,604.67
  5. Step 5: Solve for x
    x = 287,772,551,604.67/612,435.48
  6. Step 6: Final answer
    x = 469,882.23

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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.