Home / 830,860,307.60-1,246,290,461.40-400,878,611.60

Finding the Fourth Proportional to 830,860,307.60, 1,246,290,461.40 and 400,878,611.60

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Solution

The fourth proportional to 830,860,307.60, 1,246,290,461.40 and 400,878,611.60 is: 601,317,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,860,307.60 : 1,246,290,461.40 = 400,878,611.60 : x
  2. Step 2: Convert to fraction form
    830,860,307.60/1,246,290,461.40 = 400,878,611.60/x
  3. Step 3: Cross multiply
    830,860,307.60x = 1,246,290,461.40 × 400,878,611.60
  4. Step 4: Simplify right side
    830,860,307.60x = 499,611,189,816,355,456
  5. Step 5: Solve for x
    x = 499,611,189,816,355,456/830,860,307.60
  6. Step 6: Final answer
    x = 601,317,917.40

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Double scale
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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.