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Finding the Fourth Proportional to 549,785.51, 758,254.15 and 386,980.95

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Solution

The fourth proportional to 549,785.51, 758,254.15 and 386,980.95 is: 533,717.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,785.51 : 758,254.15 = 386,980.95 : x
  2. Step 2: Convert to fraction form
    549,785.51/758,254.15 = 386,980.95/x
  3. Step 3: Cross multiply
    549,785.51x = 758,254.15 × 386,980.95
  4. Step 4: Simplify right side
    549,785.51x = 293,429,911,308.44
  5. Step 5: Solve for x
    x = 293,429,911,308.44/549,785.51
  6. Step 6: Final answer
    x = 533,717.07

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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.