Home / 430,583,723.80-645,970,064.10-139,464,280.60

Finding the Fourth Proportional to 430,583,723.80, 645,970,064.10 and 139,464,280.60

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Solution

The fourth proportional to 430,583,723.80, 645,970,064.10 and 139,464,280.60 is: 209,227,022.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,583,723.80 : 645,970,064.10 = 139,464,280.60 : x
  2. Step 2: Convert to fraction form
    430,583,723.80/645,970,064.10 = 139,464,280.60/x
  3. Step 3: Cross multiply
    430,583,723.80x = 645,970,064.10 × 139,464,280.60
  4. Step 4: Simplify right side
    430,583,723.80x = 90,089,750,278,842,384
  5. Step 5: Solve for x
    x = 90,089,750,278,842,384/430,583,723.80
  6. Step 6: Final answer
    x = 209,227,022.06

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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.