Home / 686,554.40-1,028,276.40-406,618.40

Finding the Fourth Proportional to 686,554.40, 1,028,276.40 and 406,618.40

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Solution

The fourth proportional to 686,554.40, 1,028,276.40 and 406,618.40 is: 609,006.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,554.40 : 1,028,276.40 = 406,618.40 : x
  2. Step 2: Convert to fraction form
    686,554.40/1,028,276.40 = 406,618.40/x
  3. Step 3: Cross multiply
    686,554.40x = 1,028,276.40 × 406,618.40
  4. Step 4: Simplify right side
    686,554.40x = 418,116,104,525.76
  5. Step 5: Solve for x
    x = 418,116,104,525.76/686,554.40
  6. Step 6: Final answer
    x = 609,006.52

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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.