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Finding the Fourth Proportional to 549,795.18, 758,267.52 and 386,990.64

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Solution

The fourth proportional to 549,795.18, 758,267.52 and 386,990.64 is: 533,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,795.18 : 758,267.52 = 386,990.64 : x
  2. Step 2: Convert to fraction form
    549,795.18/758,267.52 = 386,990.64/x
  3. Step 3: Cross multiply
    549,795.18x = 758,267.52 × 386,990.64
  4. Step 4: Simplify right side
    549,795.18x = 293,442,432,856.01
  5. Step 5: Solve for x
    x = 293,442,432,856.01/549,795.18
  6. Step 6: Final answer
    x = 533,730.46

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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.