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Finding the Fourth Proportional to 898,679,945.80, 1,348,019,918.70 and 745,498,966.60

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Solution

The fourth proportional to 898,679,945.80, 1,348,019,918.70 and 745,498,966.60 is: 1,118,248,449.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,679,945.80 : 1,348,019,918.70 = 745,498,966.60 : x
  2. Step 2: Convert to fraction form
    898,679,945.80/1,348,019,918.70 = 745,498,966.60/x
  3. Step 3: Cross multiply
    898,679,945.80x = 1,348,019,918.70 × 745,498,966.60
  4. Step 4: Simplify right side
    898,679,945.80x = 1,004,947,456,347,066,112
  5. Step 5: Solve for x
    x = 1,004,947,456,347,066,112/898,679,945.80
  6. Step 6: Final answer
    x = 1,118,248,449.90

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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.