Home / 720,286.02-993,968.01-397,989.45

Finding the Fourth Proportional to 720,286.02, 993,968.01 and 397,989.45

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Solution

The fourth proportional to 720,286.02, 993,968.01 and 397,989.45 is: 549,210.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,286.02 : 993,968.01 = 397,989.45 : x
  2. Step 2: Convert to fraction form
    720,286.02/993,968.01 = 397,989.45/x
  3. Step 3: Cross multiply
    720,286.02x = 993,968.01 × 397,989.45
  4. Step 4: Simplify right side
    720,286.02x = 395,588,781,617.50
  5. Step 5: Solve for x
    x = 395,588,781,617.50/720,286.02
  6. Step 6: Final answer
    x = 549,210.69

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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.