Home / 861,857.38-1,289,636.70-507,038.50

Finding the Fourth Proportional to 861,857.38, 1,289,636.70 and 507,038.50

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Solution

The fourth proportional to 861,857.38, 1,289,636.70 and 507,038.50 is: 758,704.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,857.38 : 1,289,636.70 = 507,038.50 : x
  2. Step 2: Convert to fraction form
    861,857.38/1,289,636.70 = 507,038.50/x
  3. Step 3: Cross multiply
    861,857.38x = 1,289,636.70 × 507,038.50
  4. Step 4: Simplify right side
    861,857.38x = 653,895,457,912.95
  5. Step 5: Solve for x
    x = 653,895,457,912.95/861,857.38
  6. Step 6: Final answer
    x = 758,704.95

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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.