Home / 990,824,643.60-1,486,236,965.40-408,259,019.40

Finding the Fourth Proportional to 990,824,643.60, 1,486,236,965.40 and 408,259,019.40

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Solution

The fourth proportional to 990,824,643.60, 1,486,236,965.40 and 408,259,019.40 is: 612,388,529.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,824,643.60 : 1,486,236,965.40 = 408,259,019.40 : x
  2. Step 2: Convert to fraction form
    990,824,643.60/1,486,236,965.40 = 408,259,019.40/x
  3. Step 3: Cross multiply
    990,824,643.60x = 1,486,236,965.40 × 408,259,019.40
  4. Step 4: Simplify right side
    990,824,643.60x = 606,769,646,090,235,776
  5. Step 5: Solve for x
    x = 606,769,646,090,235,776/990,824,643.60
  6. Step 6: Final answer
    x = 612,388,529.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.