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Finding the Fourth Proportional to 720,196.02, 993,880.94 and 397,913.54

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Solution

The fourth proportional to 720,196.02, 993,880.94 and 397,913.54 is: 549,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,196.02 : 993,880.94 = 397,913.54 : x
  2. Step 2: Convert to fraction form
    720,196.02/993,880.94 = 397,913.54/x
  3. Step 3: Cross multiply
    720,196.02x = 993,880.94 × 397,913.54
  4. Step 4: Simplify right side
    720,196.02x = 395,478,683,173.93
  5. Step 5: Solve for x
    x = 395,478,683,173.93/720,196.02
  6. Step 6: Final answer
    x = 549,126.45

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1.5x scale

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.