Home / 990,597.60-1,366,513.20-627,410.40

Finding the Fourth Proportional to 990,597.60, 1,366,513.20 and 627,410.40

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Solution

The fourth proportional to 990,597.60, 1,366,513.20 and 627,410.40 is: 865,502.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,597.60 : 1,366,513.20 = 627,410.40 : x
  2. Step 2: Convert to fraction form
    990,597.60/1,366,513.20 = 627,410.40/x
  3. Step 3: Cross multiply
    990,597.60x = 1,366,513.20 × 627,410.40
  4. Step 4: Simplify right side
    990,597.60x = 857,364,593,417.28
  5. Step 5: Solve for x
    x = 857,364,593,417.28/990,597.60
  6. Step 6: Final answer
    x = 865,502.39

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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.