Home / 1,289,300.72-1,934,301.04-390,706.16

Finding the Fourth Proportional to 1,289,300.72, 1,934,301.04 and 390,706.16

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Solution

The fourth proportional to 1,289,300.72, 1,934,301.04 and 390,706.16 is: 586,165.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,300.72 : 1,934,301.04 = 390,706.16 : x
  2. Step 2: Convert to fraction form
    1,289,300.72/1,934,301.04 = 390,706.16/x
  3. Step 3: Cross multiply
    1,289,300.72x = 1,934,301.04 × 390,706.16
  4. Step 4: Simplify right side
    1,289,300.72x = 755,743,331,622.41
  5. Step 5: Solve for x
    x = 755,743,331,622.41/1,289,300.72
  6. Step 6: Final answer
    x = 586,165.29

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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.