Home / 501,980,482.20-692,749,886.49-278,971,561.38

Finding the Fourth Proportional to 501,980,482.20, 692,749,886.49 and 278,971,561.38

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Solution

The fourth proportional to 501,980,482.20, 692,749,886.49 and 278,971,561.38 is: 384,990,102.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,980,482.20 : 692,749,886.49 = 278,971,561.38 : x
  2. Step 2: Convert to fraction form
    501,980,482.20/692,749,886.49 = 278,971,561.38/x
  3. Step 3: Cross multiply
    501,980,482.20x = 692,749,886.49 × 278,971,561.38
  4. Step 4: Simplify right side
    501,980,482.20x = 193,257,517,479,933,056
  5. Step 5: Solve for x
    x = 193,257,517,479,933,056/501,980,482.20
  6. Step 6: Final answer
    x = 384,990,102.87

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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.