Home / 1,439,749,418.40-1,986,844,305.84-779,684,591.52

Finding the Fourth Proportional to 1,439,749,418.40, 1,986,844,305.84 and 779,684,591.52

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Solution

The fourth proportional to 1,439,749,418.40, 1,986,844,305.84 and 779,684,591.52 is: 1,075,959,379.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,749,418.40 : 1,986,844,305.84 = 779,684,591.52 : x
  2. Step 2: Convert to fraction form
    1,439,749,418.40/1,986,844,305.84 = 779,684,591.52/x
  3. Step 3: Cross multiply
    1,439,749,418.40x = 1,986,844,305.84 × 779,684,591.52
  4. Step 4: Simplify right side
    1,439,749,418.40x = 1,549,111,891,012,698,368
  5. Step 5: Solve for x
    x = 1,549,111,891,012,698,368/1,439,749,418.40
  6. Step 6: Final answer
    x = 1,075,959,379.61

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Double scale
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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.