Home / 699,172,530,585.93-964,847,907,655.47-390,528,281,490.36

Finding the Fourth Proportional to 699,172,530,585.93, 964,847,907,655.47 and 390,528,281,490.36

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Solution

The fourth proportional to 699,172,530,585.93, 964,847,907,655.47 and 390,528,281,490.36 is: 538,923,339,794.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,172,530,585.93 : 964,847,907,655.47 = 390,528,281,490.36 : x
  2. Step 2: Convert to fraction form
    699,172,530,585.93/964,847,907,655.47 = 390,528,281,490.36/x
  3. Step 3: Cross multiply
    699,172,530,585.93x = 964,847,907,655.47 × 390,528,281,490.36
  4. Step 4: Simplify right side
    699,172,530,585.93x = 376,800,395,276,260,252,581,888
  5. Step 5: Solve for x
    x = 376,800,395,276,260,252,581,888/699,172,530,585.93
  6. Step 6: Final answer
    x = 538,923,339,794.96

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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.