Home / 470,448,002.70-705,672,004.05-421,130,277.90

Finding the Fourth Proportional to 470,448,002.70, 705,672,004.05 and 421,130,277.90

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Solution

The fourth proportional to 470,448,002.70, 705,672,004.05 and 421,130,277.90 is: 631,695,416.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,448,002.70 : 705,672,004.05 = 421,130,277.90 : x
  2. Step 2: Convert to fraction form
    470,448,002.70/705,672,004.05 = 421,130,277.90/x
  3. Step 3: Cross multiply
    470,448,002.70x = 705,672,004.05 × 421,130,277.90
  4. Step 4: Simplify right side
    470,448,002.70x = 297,179,847,171,826,368
  5. Step 5: Solve for x
    x = 297,179,847,171,826,368/470,448,002.70
  6. Step 6: Final answer
    x = 631,695,416.85

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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.