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Finding the Fourth Proportional to 553,639.80, 829,077.30 and 365,633.40

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Solution

The fourth proportional to 553,639.80, 829,077.30 and 365,633.40 is: 547,537.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,639.80 : 829,077.30 = 365,633.40 : x
  2. Step 2: Convert to fraction form
    553,639.80/829,077.30 = 365,633.40/x
  3. Step 3: Cross multiply
    553,639.80x = 829,077.30 × 365,633.40
  4. Step 4: Simplify right side
    553,639.80x = 303,138,352,061.82
  5. Step 5: Solve for x
    x = 303,138,352,061.82/553,639.80
  6. Step 6: Final answer
    x = 547,537.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.