Home / 1,272,544,278.43-1,908,888,113.71-387,258,429.10

Finding the Fourth Proportional to 1,272,544,278.43, 1,908,888,113.71 and 387,258,429.10

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Solution

The fourth proportional to 1,272,544,278.43, 1,908,888,113.71 and 387,258,429.10 is: 580,909,462.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,544,278.43 : 1,908,888,113.71 = 387,258,429.10 : x
  2. Step 2: Convert to fraction form
    1,272,544,278.43/1,908,888,113.71 = 387,258,429.10/x
  3. Step 3: Cross multiply
    1,272,544,278.43x = 1,908,888,113.71 × 387,258,429.10
  4. Step 4: Simplify right side
    1,272,544,278.43x = 739,233,012,233,452,416
  5. Step 5: Solve for x
    x = 739,233,012,233,452,416/1,272,544,278.43
  6. Step 6: Final answer
    x = 580,909,462.06

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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.