Home / 430,897,751.68-646,437,415.43-139,742,171.80

Finding the Fourth Proportional to 430,897,751.68, 646,437,415.43 and 139,742,171.80

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Solution

The fourth proportional to 430,897,751.68, 646,437,415.43 and 139,742,171.80 is: 209,642,700.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,897,751.68 : 646,437,415.43 = 139,742,171.80 : x
  2. Step 2: Convert to fraction form
    430,897,751.68/646,437,415.43 = 139,742,171.80/x
  3. Step 3: Cross multiply
    430,897,751.68x = 646,437,415.43 × 139,742,171.80
  4. Step 4: Simplify right side
    430,897,751.68x = 90,334,568,363,700,304
  5. Step 5: Solve for x
    x = 90,334,568,363,700,304/430,897,751.68
  6. Step 6: Final answer
    x = 209,642,700.64

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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.