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Finding the Fourth Proportional to 518,328.08, 715,294.68 and 300,579.20

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Solution

The fourth proportional to 518,328.08, 715,294.68 and 300,579.20 is: 414,800.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,328.08 : 715,294.68 = 300,579.20 : x
  2. Step 2: Convert to fraction form
    518,328.08/715,294.68 = 300,579.20/x
  3. Step 3: Cross multiply
    518,328.08x = 715,294.68 × 300,579.20
  4. Step 4: Simplify right side
    518,328.08x = 215,002,702,678.66
  5. Step 5: Solve for x
    x = 215,002,702,678.66/518,328.08
  6. Step 6: Final answer
    x = 414,800.41

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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.