Home / 830,715,967.52-1,245,710,423.28-394,141,156.64

Finding the Fourth Proportional to 830,715,967.52, 1,245,710,423.28 and 394,141,156.64

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Solution

The fourth proportional to 830,715,967.52, 1,245,710,423.28 and 394,141,156.64 is: 591,039,255.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,715,967.52 : 1,245,710,423.28 = 394,141,156.64 : x
  2. Step 2: Convert to fraction form
    830,715,967.52/1,245,710,423.28 = 394,141,156.64/x
  3. Step 3: Cross multiply
    830,715,967.52x = 1,245,710,423.28 × 394,141,156.64
  4. Step 4: Simplify right side
    830,715,967.52x = 490,985,747,070,083,136
  5. Step 5: Solve for x
    x = 490,985,747,070,083,136/830,715,967.52
  6. Step 6: Final answer
    x = 591,039,255.61

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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.