Home / 990,266,081.40-1,485,399,122.10-645,892,313.40

Finding the Fourth Proportional to 990,266,081.40, 1,485,399,122.10 and 645,892,313.40

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Solution

The fourth proportional to 990,266,081.40, 1,485,399,122.10 and 645,892,313.40 is: 968,838,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,266,081.40 : 1,485,399,122.10 = 645,892,313.40 : x
  2. Step 2: Convert to fraction form
    990,266,081.40/1,485,399,122.10 = 645,892,313.40/x
  3. Step 3: Cross multiply
    990,266,081.40x = 1,485,399,122.10 × 645,892,313.40
  4. Step 4: Simplify right side
    990,266,081.40x = 959,407,875,295,497,984
  5. Step 5: Solve for x
    x = 959,407,875,295,497,984/990,266,081.40
  6. Step 6: Final answer
    x = 968,838,470.10

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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.