Home / 1,288,616,075.35-1,778,240,125.23-787,663,624.08

Finding the Fourth Proportional to 1,288,616,075.35, 1,778,240,125.23 and 787,663,624.08

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Solution

The fourth proportional to 1,288,616,075.35, 1,778,240,125.23 and 787,663,624.08 is: 1,086,945,202.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,616,075.35 : 1,778,240,125.23 = 787,663,624.08 : x
  2. Step 2: Convert to fraction form
    1,288,616,075.35/1,778,240,125.23 = 787,663,624.08/x
  3. Step 3: Cross multiply
    1,288,616,075.35x = 1,778,240,125.23 × 787,663,624.08
  4. Step 4: Simplify right side
    1,288,616,075.35x = 1,400,655,061,526,888,960
  5. Step 5: Solve for x
    x = 1,400,655,061,526,888,960/1,288,616,075.35
  6. Step 6: Final answer
    x = 1,086,945,202.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.