Home / 745,607.20-1,118,410.80-213,145.60

Finding the Fourth Proportional to 745,607.20, 1,118,410.80 and 213,145.60

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Solution

The fourth proportional to 745,607.20, 1,118,410.80 and 213,145.60 is: 319,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,607.20 : 1,118,410.80 = 213,145.60 : x
  2. Step 2: Convert to fraction form
    745,607.20/1,118,410.80 = 213,145.60/x
  3. Step 3: Cross multiply
    745,607.20x = 1,118,410.80 × 213,145.60
  4. Step 4: Simplify right side
    745,607.20x = 238,384,341,012.48
  5. Step 5: Solve for x
    x = 238,384,341,012.48/745,607.20
  6. Step 6: Final answer
    x = 319,718.40

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Similar ratio
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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.