Home / 745,518.76-1,118,312.70-213,115.48

Finding the Fourth Proportional to 745,518.76, 1,118,312.70 and 213,115.48

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Solution

The fourth proportional to 745,518.76, 1,118,312.70 and 213,115.48 is: 319,683.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,518.76 : 1,118,312.70 = 213,115.48 : x
  2. Step 2: Convert to fraction form
    745,518.76/1,118,312.70 = 213,115.48/x
  3. Step 3: Cross multiply
    745,518.76x = 1,118,312.70 × 213,115.48
  4. Step 4: Simplify right side
    745,518.76x = 238,329,747,850.60
  5. Step 5: Solve for x
    x = 238,329,747,850.60/745,518.76
  6. Step 6: Final answer
    x = 319,683.10

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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.