Home / 847,920,007.80-1,271,880,011.70-485,122,951.80

Finding the Fourth Proportional to 847,920,007.80, 1,271,880,011.70 and 485,122,951.80

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Solution

The fourth proportional to 847,920,007.80, 1,271,880,011.70 and 485,122,951.80 is: 727,684,427.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,920,007.80 : 1,271,880,011.70 = 485,122,951.80 : x
  2. Step 2: Convert to fraction form
    847,920,007.80/1,271,880,011.70 = 485,122,951.80/x
  3. Step 3: Cross multiply
    847,920,007.80x = 1,271,880,011.70 × 485,122,951.80
  4. Step 4: Simplify right side
    847,920,007.80x = 617,018,185,611,322,624
  5. Step 5: Solve for x
    x = 617,018,185,611,322,624/847,920,007.80
  6. Step 6: Final answer
    x = 727,684,427.70

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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.