Home / 991,415,316.90-1,368,145,571.76-545,369,075.58

Finding the Fourth Proportional to 991,415,316.90, 1,368,145,571.76 and 545,369,075.58

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Solution

The fourth proportional to 991,415,316.90, 1,368,145,571.76 and 545,369,075.58 is: 752,605,162.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,415,316.90 : 1,368,145,571.76 = 545,369,075.58 : x
  2. Step 2: Convert to fraction form
    991,415,316.90/1,368,145,571.76 = 545,369,075.58/x
  3. Step 3: Cross multiply
    991,415,316.90x = 1,368,145,571.76 × 545,369,075.58
  4. Step 4: Simplify right side
    991,415,316.90x = 746,144,285,729,621,760
  5. Step 5: Solve for x
    x = 746,144,285,729,621,760/991,415,316.90
  6. Step 6: Final answer
    x = 752,605,162.55

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1.5x scale

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.