Home / 421,838,408.91-632,847,964.01-130,699,085.07

Finding the Fourth Proportional to 421,838,408.91, 632,847,964.01 and 130,699,085.07

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Solution

The fourth proportional to 421,838,408.91, 632,847,964.01 and 130,699,085.07 is: 196,076,621.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,838,408.91 : 632,847,964.01 = 130,699,085.07 : x
  2. Step 2: Convert to fraction form
    421,838,408.91/632,847,964.01 = 130,699,085.07/x
  3. Step 3: Cross multiply
    421,838,408.91x = 632,847,964.01 × 130,699,085.07
  4. Step 4: Simplify right side
    421,838,408.91x = 82,712,649,883,865,792
  5. Step 5: Solve for x
    x = 82,712,649,883,865,792/421,838,408.91
  6. Step 6: Final answer
    x = 196,076,621.13

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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.