Home / 786,456,388.80-1,179,968,018.40-326,724,494.40

Finding the Fourth Proportional to 786,456,388.80, 1,179,968,018.40 and 326,724,494.40

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Solution

The fourth proportional to 786,456,388.80, 1,179,968,018.40 and 326,724,494.40 is: 490,204,491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,456,388.80 : 1,179,968,018.40 = 326,724,494.40 : x
  2. Step 2: Convert to fraction form
    786,456,388.80/1,179,968,018.40 = 326,724,494.40/x
  3. Step 3: Cross multiply
    786,456,388.80x = 1,179,968,018.40 × 326,724,494.40
  4. Step 4: Simplify right side
    786,456,388.80x = 385,524,454,219,909,888
  5. Step 5: Solve for x
    x = 385,524,454,219,909,888/786,456,388.80
  6. Step 6: Final answer
    x = 490,204,491.58

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1.5x scale

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.