Home / 786,456,487.80-1,179,968,166.90-326,724,593.40

Finding the Fourth Proportional to 786,456,487.80, 1,179,968,166.90 and 326,724,593.40

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Solution

The fourth proportional to 786,456,487.80, 1,179,968,166.90 and 326,724,593.40 is: 490,204,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,456,487.80 : 1,179,968,166.90 = 326,724,593.40 : x
  2. Step 2: Convert to fraction form
    786,456,487.80/1,179,968,166.90 = 326,724,593.40/x
  3. Step 3: Cross multiply
    786,456,487.80x = 1,179,968,166.90 × 326,724,593.40
  4. Step 4: Simplify right side
    786,456,487.80x = 385,524,619,555,345,856
  5. Step 5: Solve for x
    x = 385,524,619,555,345,856/786,456,487.80
  6. Step 6: Final answer
    x = 490,204,640.10

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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.