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Finding the Fourth Proportional to 663,442.80, 997,621.80 and 555,308.40

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Solution

The fourth proportional to 663,442.80, 997,621.80 and 555,308.40 is: 835,019.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,442.80 : 997,621.80 = 555,308.40 : x
  2. Step 2: Convert to fraction form
    663,442.80/997,621.80 = 555,308.40/x
  3. Step 3: Cross multiply
    663,442.80x = 997,621.80 × 555,308.40
  4. Step 4: Simplify right side
    663,442.80x = 553,987,765,563.12
  5. Step 5: Solve for x
    x = 553,987,765,563.12/663,442.80
  6. Step 6: Final answer
    x = 835,019.64

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1.5x scale

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.