Home / 990,862,478.60-1,485,311,968.80-465,290,755.40

Finding the Fourth Proportional to 990,862,478.60, 1,485,311,968.80 and 465,290,755.40

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Solution

The fourth proportional to 990,862,478.60, 1,485,311,968.80 and 465,290,755.40 is: 697,475,121.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,862,478.60 : 1,485,311,968.80 = 465,290,755.40 : x
  2. Step 2: Convert to fraction form
    990,862,478.60/1,485,311,968.80 = 465,290,755.40/x
  3. Step 3: Cross multiply
    990,862,478.60x = 1,485,311,968.80 × 465,290,755.40
  4. Step 4: Simplify right side
    990,862,478.60x = 691,101,927,967,613,184
  5. Step 5: Solve for x
    x = 691,101,927,967,613,184/990,862,478.60
  6. Step 6: Final answer
    x = 697,475,121.82

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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.