Home / 386,312.10-579,468.15-329,231.40

Finding the Fourth Proportional to 386,312.10, 579,468.15 and 329,231.40

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Solution

The fourth proportional to 386,312.10, 579,468.15 and 329,231.40 is: 493,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,312.10 : 579,468.15 = 329,231.40 : x
  2. Step 2: Convert to fraction form
    386,312.10/579,468.15 = 329,231.40/x
  3. Step 3: Cross multiply
    386,312.10x = 579,468.15 × 329,231.40
  4. Step 4: Simplify right side
    386,312.10x = 190,779,110,279.91
  5. Step 5: Solve for x
    x = 190,779,110,279.91/386,312.10
  6. Step 6: Final answer
    x = 493,847.10

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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.