Home / 699,172,530,582.55-964,847,907,650.80-390,528,281,487

Finding the Fourth Proportional to 699,172,530,582.55, 964,847,907,650.80 and 390,528,281,487

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Solution

The fourth proportional to 699,172,530,582.55, 964,847,907,650.80 and 390,528,281,487 is: 538,923,339,790.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,172,530,582.55 : 964,847,907,650.80 = 390,528,281,487 : x
  2. Step 2: Convert to fraction form
    699,172,530,582.55/964,847,907,650.80 = 390,528,281,487/x
  3. Step 3: Cross multiply
    699,172,530,582.55x = 964,847,907,650.80 × 390,528,281,487
  4. Step 4: Simplify right side
    699,172,530,582.55x = 376,800,395,271,194,607,091,712
  5. Step 5: Solve for x
    x = 376,800,395,271,194,607,091,712/699,172,530,582.55
  6. Step 6: Final answer
    x = 538,923,339,790.32

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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.