Home / 398,837,900.80-598,256,851.20-374,651,430.40

Finding the Fourth Proportional to 398,837,900.80, 598,256,851.20 and 374,651,430.40

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Solution

The fourth proportional to 398,837,900.80, 598,256,851.20 and 374,651,430.40 is: 561,977,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,837,900.80 : 598,256,851.20 = 374,651,430.40 : x
  2. Step 2: Convert to fraction form
    398,837,900.80/598,256,851.20 = 374,651,430.40/x
  3. Step 3: Cross multiply
    398,837,900.80x = 598,256,851.20 × 374,651,430.40
  4. Step 4: Simplify right side
    398,837,900.80x = 224,137,785,048,679,968
  5. Step 5: Solve for x
    x = 224,137,785,048,679,968/398,837,900.80
  6. Step 6: Final answer
    x = 561,977,145.60

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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.