Home / 1,228,355,999.70-1,842,533,999.55-763,451,412.90

Finding the Fourth Proportional to 1,228,355,999.70, 1,842,533,999.55 and 763,451,412.90

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Solution

The fourth proportional to 1,228,355,999.70, 1,842,533,999.55 and 763,451,412.90 is: 1,145,177,119.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,355,999.70 : 1,842,533,999.55 = 763,451,412.90 : x
  2. Step 2: Convert to fraction form
    1,228,355,999.70/1,842,533,999.55 = 763,451,412.90/x
  3. Step 3: Cross multiply
    1,228,355,999.70x = 1,842,533,999.55 × 763,451,412.90
  4. Step 4: Simplify right side
    1,228,355,999.70x = 1,406,685,185,272,735,488
  5. Step 5: Solve for x
    x = 1,406,685,185,272,735,488/1,228,355,999.70
  6. Step 6: Final answer
    x = 1,145,177,119.35

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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.