Home / 686,594,801.60-1,029,892,202.40-169,021,131.20

Finding the Fourth Proportional to 686,594,801.60, 1,029,892,202.40 and 169,021,131.20

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Solution

The fourth proportional to 686,594,801.60, 1,029,892,202.40 and 169,021,131.20 is: 253,531,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,594,801.60 : 1,029,892,202.40 = 169,021,131.20 : x
  2. Step 2: Convert to fraction form
    686,594,801.60/1,029,892,202.40 = 169,021,131.20/x
  3. Step 3: Cross multiply
    686,594,801.60x = 1,029,892,202.40 × 169,021,131.20
  4. Step 4: Simplify right side
    686,594,801.60x = 174,073,545,063,707,328
  5. Step 5: Solve for x
    x = 174,073,545,063,707,328/686,594,801.60
  6. Step 6: Final answer
    x = 253,531,696.80

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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.