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Finding the Fourth Proportional to 978,034,512.30, 1,467,051,768.45 and 881,288,630.70

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Solution

The fourth proportional to 978,034,512.30, 1,467,051,768.45 and 881,288,630.70 is: 1,321,932,946.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,034,512.30 : 1,467,051,768.45 = 881,288,630.70 : x
  2. Step 2: Convert to fraction form
    978,034,512.30/1,467,051,768.45 = 881,288,630.70/x
  3. Step 3: Cross multiply
    978,034,512.30x = 1,467,051,768.45 × 881,288,630.70
  4. Step 4: Simplify right side
    978,034,512.30x = 1,292,896,044,183,314,176
  5. Step 5: Solve for x
    x = 1,292,896,044,183,314,176/978,034,512.30
  6. Step 6: Final answer
    x = 1,321,932,946.05

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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.