Home / 720,200,380.53-993,877,533.63-390,175,519.53

Finding the Fourth Proportional to 720,200,380.53, 993,877,533.63 and 390,175,519.53

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Solution

The fourth proportional to 720,200,380.53, 993,877,533.63 and 390,175,519.53 is: 538,442,763.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,200,380.53 : 993,877,533.63 = 390,175,519.53 : x
  2. Step 2: Convert to fraction form
    720,200,380.53/993,877,533.63 = 390,175,519.53/x
  3. Step 3: Cross multiply
    720,200,380.53x = 993,877,533.63 × 390,175,519.53
  4. Step 4: Simplify right side
    720,200,380.53x = 387,786,683,033,280,256
  5. Step 5: Solve for x
    x = 387,786,683,033,280,256/720,200,380.53
  6. Step 6: Final answer
    x = 538,442,763.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.