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Finding the Fourth Proportional to 612,606.60, 845,387.64 and 340,664.04

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Solution

The fourth proportional to 612,606.60, 845,387.64 and 340,664.04 is: 470,111.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,606.60 : 845,387.64 = 340,664.04 : x
  2. Step 2: Convert to fraction form
    612,606.60/845,387.64 = 340,664.04/x
  3. Step 3: Cross multiply
    612,606.60x = 845,387.64 × 340,664.04
  4. Step 4: Simplify right side
    612,606.60x = 287,993,168,808.47
  5. Step 5: Solve for x
    x = 287,993,168,808.47/612,606.60
  6. Step 6: Final answer
    x = 470,111.11

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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.