Home / 1,689,423.91-2,331,386.43-915,035.50

Finding the Fourth Proportional to 1,689,423.91, 2,331,386.43 and 915,035.50

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Solution

The fourth proportional to 1,689,423.91, 2,331,386.43 and 915,035.50 is: 1,262,738.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,423.91 : 2,331,386.43 = 915,035.50 : x
  2. Step 2: Convert to fraction form
    1,689,423.91/2,331,386.43 = 915,035.50/x
  3. Step 3: Cross multiply
    1,689,423.91x = 2,331,386.43 × 915,035.50
  4. Step 4: Simplify right side
    1,689,423.91x = 2,133,301,347,668.27
  5. Step 5: Solve for x
    x = 2,133,301,347,668.27/1,689,423.91
  6. Step 6: Final answer
    x = 1,262,738.93

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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.