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Finding the Fourth Proportional to 675,616.83, 932,688.77 and 389,081.57

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Solution

The fourth proportional to 675,616.83, 932,688.77 and 389,081.57 is: 537,126.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,616.83 : 932,688.77 = 389,081.57 : x
  2. Step 2: Convert to fraction form
    675,616.83/932,688.77 = 389,081.57/x
  3. Step 3: Cross multiply
    675,616.83x = 932,688.77 × 389,081.57
  4. Step 4: Simplify right side
    675,616.83x = 362,892,004,344.12
  5. Step 5: Solve for x
    x = 362,892,004,344.12/675,616.83
  6. Step 6: Final answer
    x = 537,126.95

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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.