Home / 830,860,312.60-1,246,290,468.90-400,878,616.60

Finding the Fourth Proportional to 830,860,312.60, 1,246,290,468.90 and 400,878,616.60

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Solution

The fourth proportional to 830,860,312.60, 1,246,290,468.90 and 400,878,616.60 is: 601,317,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,860,312.60 : 1,246,290,468.90 = 400,878,616.60 : x
  2. Step 2: Convert to fraction form
    830,860,312.60/1,246,290,468.90 = 400,878,616.60/x
  3. Step 3: Cross multiply
    830,860,312.60x = 1,246,290,468.90 × 400,878,616.60
  4. Step 4: Simplify right side
    830,860,312.60x = 499,611,199,054,397,376
  5. Step 5: Solve for x
    x = 499,611,199,054,397,376/830,860,312.60
  6. Step 6: Final answer
    x = 601,317,924.90

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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.