Home / 718,890,468,359.40-992,100,031,293.40-398,106,303,467.38

Finding the Fourth Proportional to 718,890,468,359.40, 992,100,031,293.40 and 398,106,303,467.38

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Solution

The fourth proportional to 718,890,468,359.40, 992,100,031,293.40 and 398,106,303,467.38 is: 549,403,968,353.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,468,359.40 : 992,100,031,293.40 = 398,106,303,467.38 : x
  2. Step 2: Convert to fraction form
    718,890,468,359.40/992,100,031,293.40 = 398,106,303,467.38/x
  3. Step 3: Cross multiply
    718,890,468,359.40x = 992,100,031,293.40 × 398,106,303,467.38
  4. Step 4: Simplify right side
    718,890,468,359.40x = 394,961,276,128,087,490,166,784
  5. Step 5: Solve for x
    x = 394,961,276,128,087,490,166,784/718,890,468,359.40
  6. Step 6: Final answer
    x = 549,403,968,353.40

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Double scale
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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.