Home / 430,583,722.80-645,970,062.60-139,464,279.60

Finding the Fourth Proportional to 430,583,722.80, 645,970,062.60 and 139,464,279.60

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Solution

The fourth proportional to 430,583,722.80, 645,970,062.60 and 139,464,279.60 is: 209,227,020.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,583,722.80 : 645,970,062.60 = 139,464,279.60 : x
  2. Step 2: Convert to fraction form
    430,583,722.80/645,970,062.60 = 139,464,279.60/x
  3. Step 3: Cross multiply
    430,583,722.80x = 645,970,062.60 × 139,464,279.60
  4. Step 4: Simplify right side
    430,583,722.80x = 90,089,749,423,675,904
  5. Step 5: Solve for x
    x = 90,089,749,423,675,904/430,583,722.80
  6. Step 6: Final answer
    x = 209,227,020.56

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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.