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Finding the Fourth Proportional to 613,989.36, 920,210.49 and 328,973.04

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Solution

The fourth proportional to 613,989.36, 920,210.49 and 328,973.04 is: 493,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,989.36 : 920,210.49 = 328,973.04 : x
  2. Step 2: Convert to fraction form
    613,989.36/920,210.49 = 328,973.04/x
  3. Step 3: Cross multiply
    613,989.36x = 920,210.49 × 328,973.04
  4. Step 4: Simplify right side
    613,989.36x = 302,724,442,335.19
  5. Step 5: Solve for x
    x = 302,724,442,335.19/613,989.36
  6. Step 6: Final answer
    x = 493,045.10

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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.