Home / 686,717,999.60-1,030,076,999.40-659,933,373.20

Finding the Fourth Proportional to 686,717,999.60, 1,030,076,999.40 and 659,933,373.20

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Solution

The fourth proportional to 686,717,999.60, 1,030,076,999.40 and 659,933,373.20 is: 989,900,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,717,999.60 : 1,030,076,999.40 = 659,933,373.20 : x
  2. Step 2: Convert to fraction form
    686,717,999.60/1,030,076,999.40 = 659,933,373.20/x
  3. Step 3: Cross multiply
    686,717,999.60x = 1,030,076,999.40 × 659,933,373.20
  4. Step 4: Simplify right side
    686,717,999.60x = 679,782,188,869,776,384
  5. Step 5: Solve for x
    x = 679,782,188,869,776,384/686,717,999.60
  6. Step 6: Final answer
    x = 989,900,059.80

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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.