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Finding the Fourth Proportional to 620,054.73, 855,609.24 and 348,152.50

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Solution

The fourth proportional to 620,054.73, 855,609.24 and 348,152.50 is: 480,413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,054.73 : 855,609.24 = 348,152.50 : x
  2. Step 2: Convert to fraction form
    620,054.73/855,609.24 = 348,152.50/x
  3. Step 3: Cross multiply
    620,054.73x = 855,609.24 × 348,152.50
  4. Step 4: Simplify right side
    620,054.73x = 297,882,495,929.10
  5. Step 5: Solve for x
    x = 297,882,495,929.10/620,054.73
  6. Step 6: Final answer
    x = 480,413.23

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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.