Home / 397,989,459.60-596,984,189.40-121,640,139.60

Finding the Fourth Proportional to 397,989,459.60, 596,984,189.40 and 121,640,139.60

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Solution

The fourth proportional to 397,989,459.60, 596,984,189.40 and 121,640,139.60 is: 182,460,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,989,459.60 : 596,984,189.40 = 121,640,139.60 : x
  2. Step 2: Convert to fraction form
    397,989,459.60/596,984,189.40 = 121,640,139.60/x
  3. Step 3: Cross multiply
    397,989,459.60x = 596,984,189.40 × 121,640,139.60
  4. Step 4: Simplify right side
    397,989,459.60x = 72,617,240,137,608,832
  5. Step 5: Solve for x
    x = 72,617,240,137,608,832/397,989,459.60
  6. Step 6: Final answer
    x = 182,460,209.40

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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.