Home / 668,875.20-1,003,312.80-403,454.40

Finding the Fourth Proportional to 668,875.20, 1,003,312.80 and 403,454.40

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Solution

The fourth proportional to 668,875.20, 1,003,312.80 and 403,454.40 is: 605,181.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,875.20 : 1,003,312.80 = 403,454.40 : x
  2. Step 2: Convert to fraction form
    668,875.20/1,003,312.80 = 403,454.40/x
  3. Step 3: Cross multiply
    668,875.20x = 1,003,312.80 × 403,454.40
  4. Step 4: Simplify right side
    668,875.20x = 404,790,963,736.32
  5. Step 5: Solve for x
    x = 404,790,963,736.32/668,875.20
  6. Step 6: Final answer
    x = 605,181.60

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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.