Home / 990,465.60-1,485,698.40-459,024.60

Finding the Fourth Proportional to 990,465.60, 1,485,698.40 and 459,024.60

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Solution

The fourth proportional to 990,465.60, 1,485,698.40 and 459,024.60 is: 688,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,465.60 : 1,485,698.40 = 459,024.60 : x
  2. Step 2: Convert to fraction form
    990,465.60/1,485,698.40 = 459,024.60/x
  3. Step 3: Cross multiply
    990,465.60x = 1,485,698.40 × 459,024.60
  4. Step 4: Simplify right side
    990,465.60x = 681,972,113,780.64
  5. Step 5: Solve for x
    x = 681,972,113,780.64/990,465.60
  6. Step 6: Final answer
    x = 688,536.90

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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.