Home / 1,185,526,628.34-1,778,128,514.56-312,054,851.76

Finding the Fourth Proportional to 1,185,526,628.34, 1,778,128,514.56 and 312,054,851.76

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Solution

The fourth proportional to 1,185,526,628.34, 1,778,128,514.56 and 312,054,851.76 is: 468,039,786.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,526,628.34 : 1,778,128,514.56 = 312,054,851.76 : x
  2. Step 2: Convert to fraction form
    1,185,526,628.34/1,778,128,514.56 = 312,054,851.76/x
  3. Step 3: Cross multiply
    1,185,526,628.34x = 1,778,128,514.56 × 312,054,851.76
  4. Step 4: Simplify right side
    1,185,526,628.34x = 554,873,630,021,249,792
  5. Step 5: Solve for x
    x = 554,873,630,021,249,792/1,185,526,628.34
  6. Step 6: Final answer
    x = 468,039,786.50

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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.