Home / 498,987,999.60-688,568,482.44-290,129,324.64

Finding the Fourth Proportional to 498,987,999.60, 688,568,482.44 and 290,129,324.64

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Solution

The fourth proportional to 498,987,999.60, 688,568,482.44 and 290,129,324.64 is: 400,358,142.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,987,999.60 : 688,568,482.44 = 290,129,324.64 : x
  2. Step 2: Convert to fraction form
    498,987,999.60/688,568,482.44 = 290,129,324.64/x
  3. Step 3: Cross multiply
    498,987,999.60x = 688,568,482.44 × 290,129,324.64
  4. Step 4: Simplify right side
    498,987,999.60x = 199,773,908,778,706,912
  5. Step 5: Solve for x
    x = 199,773,908,778,706,912/498,987,999.60
  6. Step 6: Final answer
    x = 400,358,142.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.