Home / 430,897,725.33-646,437,375.92-139,742,145.45

Finding the Fourth Proportional to 430,897,725.33, 646,437,375.92 and 139,742,145.45

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Solution

The fourth proportional to 430,897,725.33, 646,437,375.92 and 139,742,145.45 is: 209,642,661.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,897,725.33 : 646,437,375.92 = 139,742,145.45 : x
  2. Step 2: Convert to fraction form
    430,897,725.33/646,437,375.92 = 139,742,145.45/x
  3. Step 3: Cross multiply
    430,897,725.33x = 646,437,375.92 × 139,742,145.45
  4. Step 4: Simplify right side
    430,897,725.33x = 90,334,545,809,430,240
  5. Step 5: Solve for x
    x = 90,334,545,809,430,240/430,897,725.33
  6. Step 6: Final answer
    x = 209,642,661.12

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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.