Home / 612,964.10-917,696.55-542,980.10

Finding the Fourth Proportional to 612,964.10, 917,696.55 and 542,980.10

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Solution

The fourth proportional to 612,964.10, 917,696.55 and 542,980.10 is: 812,920.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,964.10 : 917,696.55 = 542,980.10 : x
  2. Step 2: Convert to fraction form
    612,964.10/917,696.55 = 542,980.10/x
  3. Step 3: Cross multiply
    612,964.10x = 917,696.55 × 542,980.10
  4. Step 4: Simplify right side
    612,964.10x = 498,290,964,488.66
  5. Step 5: Solve for x
    x = 498,290,964,488.66/612,964.10
  6. Step 6: Final answer
    x = 812,920.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.