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Finding the Fourth Proportional to 663,445.80, 997,626.30 and 555,311.40

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Solution

The fourth proportional to 663,445.80, 997,626.30 and 555,311.40 is: 835,024.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,445.80 : 997,626.30 = 555,311.40 : x
  2. Step 2: Convert to fraction form
    663,445.80/997,626.30 = 555,311.40/x
  3. Step 3: Cross multiply
    663,445.80x = 997,626.30 × 555,311.40
  4. Step 4: Simplify right side
    663,445.80x = 553,993,257,329.82
  5. Step 5: Solve for x
    x = 553,993,257,329.82/663,445.80
  6. Step 6: Final answer
    x = 835,024.14

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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.