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Finding the Fourth Proportional to 549,509.76, 758,314.53 and 307,791.72

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Solution

The fourth proportional to 549,509.76, 758,314.53 and 307,791.72 is: 424,747.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,509.76 : 758,314.53 = 307,791.72 : x
  2. Step 2: Convert to fraction form
    549,509.76/758,314.53 = 307,791.72/x
  3. Step 3: Cross multiply
    549,509.76x = 758,314.53 × 307,791.72
  4. Step 4: Simplify right side
    549,509.76x = 233,402,933,489.69
  5. Step 5: Solve for x
    x = 233,402,933,489.69/549,509.76
  6. Step 6: Final answer
    x = 424,747.57

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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.