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Finding the Fourth Proportional to 447,079,702.80, 670,619,554.20 and 425,916,541.20

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Solution

The fourth proportional to 447,079,702.80, 670,619,554.20 and 425,916,541.20 is: 638,874,811.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,079,702.80 : 670,619,554.20 = 425,916,541.20 : x
  2. Step 2: Convert to fraction form
    447,079,702.80/670,619,554.20 = 425,916,541.20/x
  3. Step 3: Cross multiply
    447,079,702.80x = 670,619,554.20 × 425,916,541.20
  4. Step 4: Simplify right side
    447,079,702.80x = 285,627,960,985,949,952
  5. Step 5: Solve for x
    x = 285,627,960,985,949,952/447,079,702.80
  6. Step 6: Final answer
    x = 638,874,811.80

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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.