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Finding the Fourth Proportional to 671,319.84, 926,427.60 and 369,516

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Solution

The fourth proportional to 671,319.84, 926,427.60 and 369,516 is: 509,935.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,319.84 : 926,427.60 = 369,516 : x
  2. Step 2: Convert to fraction form
    671,319.84/926,427.60 = 369,516/x
  3. Step 3: Cross multiply
    671,319.84x = 926,427.60 × 369,516
  4. Step 4: Simplify right side
    671,319.84x = 342,329,821,041.60
  5. Step 5: Solve for x
    x = 342,329,821,041.60/671,319.84
  6. Step 6: Final answer
    x = 509,935.50

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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.