Home / 877,811,716.80-1,210,208,300.72-697,357,445.78

Finding the Fourth Proportional to 877,811,716.80, 1,210,208,300.72 and 697,357,445.78

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Solution

The fourth proportional to 877,811,716.80, 1,210,208,300.72 and 697,357,445.78 is: 961,422,311.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,811,716.80 : 1,210,208,300.72 = 697,357,445.78 : x
  2. Step 2: Convert to fraction form
    877,811,716.80/1,210,208,300.72 = 697,357,445.78/x
  3. Step 3: Cross multiply
    877,811,716.80x = 1,210,208,300.72 × 697,357,445.78
  4. Step 4: Simplify right side
    877,811,716.80x = 843,947,769,442,315,392
  5. Step 5: Solve for x
    x = 843,947,769,442,315,392/877,811,716.80
  6. Step 6: Final answer
    x = 961,422,311.06

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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.