Home / 787,200,999.12-1,086,330,226.94-429,968,701.47

Finding the Fourth Proportional to 787,200,999.12, 1,086,330,226.94 and 429,968,701.47

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Solution

The fourth proportional to 787,200,999.12, 1,086,330,226.94 and 429,968,701.47 is: 593,352,901.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,200,999.12 : 1,086,330,226.94 = 429,968,701.47 : x
  2. Step 2: Convert to fraction form
    787,200,999.12/1,086,330,226.94 = 429,968,701.47/x
  3. Step 3: Cross multiply
    787,200,999.12x = 1,086,330,226.94 × 429,968,701.47
  4. Step 4: Simplify right side
    787,200,999.12x = 467,087,997,042,017,152
  5. Step 5: Solve for x
    x = 467,087,997,042,017,152/787,200,999.12
  6. Step 6: Final answer
    x = 593,352,901.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.