Home / 718,890,468,362.60-992,100,031,297.80-398,106,303,470.64

Finding the Fourth Proportional to 718,890,468,362.60, 992,100,031,297.80 and 398,106,303,470.64

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Solution

The fourth proportional to 718,890,468,362.60, 992,100,031,297.80 and 398,106,303,470.64 is: 549,403,968,357.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,468,362.60 : 992,100,031,297.80 = 398,106,303,470.64 : x
  2. Step 2: Convert to fraction form
    718,890,468,362.60/992,100,031,297.80 = 398,106,303,470.64/x
  3. Step 3: Cross multiply
    718,890,468,362.60x = 992,100,031,297.80 × 398,106,303,470.64
  4. Step 4: Simplify right side
    718,890,468,362.60x = 394,961,276,133,073,410,326,528
  5. Step 5: Solve for x
    x = 394,961,276,133,073,410,326,528/718,890,468,362.60
  6. Step 6: Final answer
    x = 549,403,968,357.89

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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.