Home / 437,018,720.40-655,528,080.60-389,401,606.80

Finding the Fourth Proportional to 437,018,720.40, 655,528,080.60 and 389,401,606.80

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Solution

The fourth proportional to 437,018,720.40, 655,528,080.60 and 389,401,606.80 is: 584,102,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,018,720.40 : 655,528,080.60 = 389,401,606.80 : x
  2. Step 2: Convert to fraction form
    437,018,720.40/655,528,080.60 = 389,401,606.80/x
  3. Step 3: Cross multiply
    437,018,720.40x = 655,528,080.60 × 389,401,606.80
  4. Step 4: Simplify right side
    437,018,720.40x = 255,263,687,888,159,936
  5. Step 5: Solve for x
    x = 255,263,687,888,159,936/437,018,720.40
  6. Step 6: Final answer
    x = 584,102,410.20

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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.