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Finding the Fourth Proportional to 663,446.80, 997,627.80 and 555,312.40

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Solution

The fourth proportional to 663,446.80, 997,627.80 and 555,312.40 is: 835,025.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,446.80 : 997,627.80 = 555,312.40 : x
  2. Step 2: Convert to fraction form
    663,446.80/997,627.80 = 555,312.40/x
  3. Step 3: Cross multiply
    663,446.80x = 997,627.80 × 555,312.40
  4. Step 4: Simplify right side
    663,446.80x = 553,995,087,924.72
  5. Step 5: Solve for x
    x = 553,995,087,924.72/663,446.80
  6. Step 6: Final answer
    x = 835,025.64

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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.