Home / 990,084.60-1,484,781.30-516,612.60

Finding the Fourth Proportional to 990,084.60, 1,484,781.30 and 516,612.60

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Solution

The fourth proportional to 990,084.60, 1,484,781.30 and 516,612.60 is: 774,738.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,084.60 : 1,484,781.30 = 516,612.60 : x
  2. Step 2: Convert to fraction form
    990,084.60/1,484,781.30 = 516,612.60/x
  3. Step 3: Cross multiply
    990,084.60x = 1,484,781.30 × 516,612.60
  4. Step 4: Simplify right side
    990,084.60x = 767,056,727,824.38
  5. Step 5: Solve for x
    x = 767,056,727,824.38/990,084.60
  6. Step 6: Final answer
    x = 774,738.57

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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.