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Finding the Fourth Proportional to 553,639.70, 829,941.15 and 433,630.10

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Solution

The fourth proportional to 553,639.70, 829,941.15 and 433,630.10 is: 650,039.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,639.70 : 829,941.15 = 433,630.10 : x
  2. Step 2: Convert to fraction form
    553,639.70/829,941.15 = 433,630.10/x
  3. Step 3: Cross multiply
    553,639.70x = 829,941.15 × 433,630.10
  4. Step 4: Simplify right side
    553,639.70x = 359,887,463,868.62
  5. Step 5: Solve for x
    x = 359,887,463,868.62/553,639.70
  6. Step 6: Final answer
    x = 650,039.12

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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.