Home / 917,121.04-1,265,632.08-509,217.04

Finding the Fourth Proportional to 917,121.04, 1,265,632.08 and 509,217.04

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Solution

The fourth proportional to 917,121.04, 1,265,632.08 and 509,217.04 is: 702,722.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,121.04 : 1,265,632.08 = 509,217.04 : x
  2. Step 2: Convert to fraction form
    917,121.04/1,265,632.08 = 509,217.04/x
  3. Step 3: Cross multiply
    917,121.04x = 1,265,632.08 × 509,217.04
  4. Step 4: Simplify right side
    917,121.04x = 644,481,421,506.64
  5. Step 5: Solve for x
    x = 644,481,421,506.64/917,121.04
  6. Step 6: Final answer
    x = 702,722.32

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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.