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Finding the Fourth Proportional to 612,751.76, 845,585.30 and 340,813.80

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Solution

The fourth proportional to 612,751.76, 845,585.30 and 340,813.80 is: 470,316.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,751.76 : 845,585.30 = 340,813.80 : x
  2. Step 2: Convert to fraction form
    612,751.76/845,585.30 = 340,813.80/x
  3. Step 3: Cross multiply
    612,751.76x = 845,585.30 × 340,813.80
  4. Step 4: Simplify right side
    612,751.76x = 288,187,139,317.14
  5. Step 5: Solve for x
    x = 288,187,139,317.14/612,751.76
  6. Step 6: Final answer
    x = 470,316.30

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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.