Home / 678,744.60-1,018,116.90-346,277.40

Finding the Fourth Proportional to 678,744.60, 1,018,116.90 and 346,277.40

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Solution

The fourth proportional to 678,744.60, 1,018,116.90 and 346,277.40 is: 519,416.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,744.60 : 1,018,116.90 = 346,277.40 : x
  2. Step 2: Convert to fraction form
    678,744.60/1,018,116.90 = 346,277.40/x
  3. Step 3: Cross multiply
    678,744.60x = 1,018,116.90 × 346,277.40
  4. Step 4: Simplify right side
    678,744.60x = 352,550,873,028.06
  5. Step 5: Solve for x
    x = 352,550,873,028.06/678,744.60
  6. Step 6: Final answer
    x = 519,416.10

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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.