Home / 931,662,005.10-1,397,493,007.65-285,345,768.30

Finding the Fourth Proportional to 931,662,005.10, 1,397,493,007.65 and 285,345,768.30

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Solution

The fourth proportional to 931,662,005.10, 1,397,493,007.65 and 285,345,768.30 is: 428,018,652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,662,005.10 : 1,397,493,007.65 = 285,345,768.30 : x
  2. Step 2: Convert to fraction form
    931,662,005.10/1,397,493,007.65 = 285,345,768.30/x
  3. Step 3: Cross multiply
    931,662,005.10x = 1,397,493,007.65 × 285,345,768.30
  4. Step 4: Simplify right side
    931,662,005.10x = 398,768,715,961,767,040
  5. Step 5: Solve for x
    x = 398,768,715,961,767,040/931,662,005.10
  6. Step 6: Final answer
    x = 428,018,652.45

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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.