Home / 437,018,719.40-655,528,079.10-389,401,605.80

Finding the Fourth Proportional to 437,018,719.40, 655,528,079.10 and 389,401,605.80

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Solution

The fourth proportional to 437,018,719.40, 655,528,079.10 and 389,401,605.80 is: 584,102,408.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,018,719.40 : 655,528,079.10 = 389,401,605.80 : x
  2. Step 2: Convert to fraction form
    437,018,719.40/655,528,079.10 = 389,401,605.80/x
  3. Step 3: Cross multiply
    437,018,719.40x = 655,528,079.10 × 389,401,605.80
  4. Step 4: Simplify right side
    437,018,719.40x = 255,263,686,648,529,440
  5. Step 5: Solve for x
    x = 255,263,686,648,529,440/437,018,719.40
  6. Step 6: Final answer
    x = 584,102,408.70

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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.