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Finding the Fourth Proportional to 671,739.86, 926,959 and 369,933.86

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Solution

The fourth proportional to 671,739.86, 926,959 and 369,933.86 is: 510,485.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,739.86 : 926,959 = 369,933.86 : x
  2. Step 2: Convert to fraction form
    671,739.86/926,959 = 369,933.86/x
  3. Step 3: Cross multiply
    671,739.86x = 926,959 × 369,933.86
  4. Step 4: Simplify right side
    671,739.86x = 342,913,520,931.74
  5. Step 5: Solve for x
    x = 342,913,520,931.74/671,739.86
  6. Step 6: Final answer
    x = 510,485.59

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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.