Home / 1,289,289.72-1,934,284.50-390,695.16

Finding the Fourth Proportional to 1,289,289.72, 1,934,284.50 and 390,695.16

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Solution

The fourth proportional to 1,289,289.72, 1,934,284.50 and 390,695.16 is: 586,148.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,289.72 : 1,934,284.50 = 390,695.16 : x
  2. Step 2: Convert to fraction form
    1,289,289.72/1,934,284.50 = 390,695.16/x
  3. Step 3: Cross multiply
    1,289,289.72x = 1,934,284.50 × 390,695.16
  4. Step 4: Simplify right side
    1,289,289.72x = 755,715,592,213.02
  5. Step 5: Solve for x
    x = 755,715,592,213.02/1,289,289.72
  6. Step 6: Final answer
    x = 586,148.78

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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.