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Finding the Fourth Proportional to 668,792,280.80, 1,003,188,421.20 and 668,792,280.80

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Solution

The fourth proportional to 668,792,280.80, 1,003,188,421.20 and 668,792,280.80 is: 1,003,188,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,792,280.80 : 1,003,188,421.20 = 668,792,280.80 : x
  2. Step 2: Convert to fraction form
    668,792,280.80/1,003,188,421.20 = 668,792,280.80/x
  3. Step 3: Cross multiply
    668,792,280.80x = 1,003,188,421.20 × 668,792,280.80
  4. Step 4: Simplify right side
    668,792,280.80x = 670,924,672,286,499,072
  5. Step 5: Solve for x
    x = 670,924,672,286,499,072/668,792,280.80
  6. Step 6: Final answer
    x = 1,003,188,421.20

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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.