Home / 718,890,468,382.80-992,100,031,325.76-398,106,303,490.82

Finding the Fourth Proportional to 718,890,468,382.80, 992,100,031,325.76 and 398,106,303,490.82

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Solution

The fourth proportional to 718,890,468,382.80, 992,100,031,325.76 and 398,106,303,490.82 is: 549,403,968,385.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,468,382.80 : 992,100,031,325.76 = 398,106,303,490.82 : x
  2. Step 2: Convert to fraction form
    718,890,468,382.80/992,100,031,325.76 = 398,106,303,490.82/x
  3. Step 3: Cross multiply
    718,890,468,382.80x = 992,100,031,325.76 × 398,106,303,490.82
  4. Step 4: Simplify right side
    718,890,468,382.80x = 394,961,276,164,225,076,559,872
  5. Step 5: Solve for x
    x = 394,961,276,164,225,076,559,872/718,890,468,382.80
  6. Step 6: Final answer
    x = 549,403,968,385.78

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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.