Home / 3,120,666.60-4,680,999.90-990,917.40

Finding the Fourth Proportional to 3,120,666.60, 4,680,999.90 and 990,917.40

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Solution

The fourth proportional to 3,120,666.60, 4,680,999.90 and 990,917.40 is: 1,486,376.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,666.60 : 4,680,999.90 = 990,917.40 : x
  2. Step 2: Convert to fraction form
    3,120,666.60/4,680,999.90 = 990,917.40/x
  3. Step 3: Cross multiply
    3,120,666.60x = 4,680,999.90 × 990,917.40
  4. Step 4: Simplify right side
    3,120,666.60x = 4,638,484,250,308.26
  5. Step 5: Solve for x
    x = 4,638,484,250,308.26/3,120,666.60
  6. Step 6: Final answer
    x = 1,486,376.10

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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.