Home / 830,860,313.10-1,246,290,469.65-400,878,617.10

Finding the Fourth Proportional to 830,860,313.10, 1,246,290,469.65 and 400,878,617.10

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Solution

The fourth proportional to 830,860,313.10, 1,246,290,469.65 and 400,878,617.10 is: 601,317,925.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,860,313.10 : 1,246,290,469.65 = 400,878,617.10 : x
  2. Step 2: Convert to fraction form
    830,860,313.10/1,246,290,469.65 = 400,878,617.10/x
  3. Step 3: Cross multiply
    830,860,313.10x = 1,246,290,469.65 × 400,878,617.10
  4. Step 4: Simplify right side
    830,860,313.10x = 499,611,199,978,201,600
  5. Step 5: Solve for x
    x = 499,611,199,978,201,600/830,860,313.10
  6. Step 6: Final answer
    x = 601,317,925.65

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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.