Home / 392,743,418.40-589,020,649.20-120,116,547.36

Finding the Fourth Proportional to 392,743,418.40, 589,020,649.20 and 120,116,547.36

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Solution

The fourth proportional to 392,743,418.40, 589,020,649.20 and 120,116,547.36 is: 180,145,925.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,743,418.40 : 589,020,649.20 = 120,116,547.36 : x
  2. Step 2: Convert to fraction form
    392,743,418.40/589,020,649.20 = 120,116,547.36/x
  3. Step 3: Cross multiply
    392,743,418.40x = 589,020,649.20 × 120,116,547.36
  4. Step 4: Simplify right side
    392,743,418.40x = 70,751,126,705,649,752
  5. Step 5: Solve for x
    x = 70,751,126,705,649,752/392,743,418.40
  6. Step 6: Final answer
    x = 180,145,925.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.