Home / 1,390,445.38-2,085,143.19-641,966.50

Finding the Fourth Proportional to 1,390,445.38, 2,085,143.19 and 641,966.50

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Solution

The fourth proportional to 1,390,445.38, 2,085,143.19 and 641,966.50 is: 962,707.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,445.38 : 2,085,143.19 = 641,966.50 : x
  2. Step 2: Convert to fraction form
    1,390,445.38/2,085,143.19 = 641,966.50/x
  3. Step 3: Cross multiply
    1,390,445.38x = 2,085,143.19 × 641,966.50
  4. Step 4: Simplify right side
    1,390,445.38x = 1,338,592,075,683.14
  5. Step 5: Solve for x
    x = 1,338,592,075,683.14/1,390,445.38
  6. Step 6: Final answer
    x = 962,707.41

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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.