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Finding the Fourth Proportional to 653,653.80, 980,480.70 and 416,291.40

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Solution

The fourth proportional to 653,653.80, 980,480.70 and 416,291.40 is: 624,437.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,653.80 : 980,480.70 = 416,291.40 : x
  2. Step 2: Convert to fraction form
    653,653.80/980,480.70 = 416,291.40/x
  3. Step 3: Cross multiply
    653,653.80x = 980,480.70 × 416,291.40
  4. Step 4: Simplify right side
    653,653.80x = 408,165,683,275.98
  5. Step 5: Solve for x
    x = 408,165,683,275.98/653,653.80
  6. Step 6: Final answer
    x = 624,437.10

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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.