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Finding the Fourth Proportional to 579,978,916.80, 869,968,375.20 and 557,683,569.60

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Solution

The fourth proportional to 579,978,916.80, 869,968,375.20 and 557,683,569.60 is: 836,525,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,978,916.80 : 869,968,375.20 = 557,683,569.60 : x
  2. Step 2: Convert to fraction form
    579,978,916.80/869,968,375.20 = 557,683,569.60/x
  3. Step 3: Cross multiply
    579,978,916.80x = 869,968,375.20 × 557,683,569.60
  4. Step 4: Simplify right side
    579,978,916.80x = 485,167,068,920,648,192
  5. Step 5: Solve for x
    x = 485,167,068,920,648,192/579,978,916.80
  6. Step 6: Final answer
    x = 836,525,354.40

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1.5x scale

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.