Home / 1,757,905.40-2,636,858.10-428,209.40

Finding the Fourth Proportional to 1,757,905.40, 2,636,858.10 and 428,209.40

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Solution

The fourth proportional to 1,757,905.40, 2,636,858.10 and 428,209.40 is: 642,314.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,757,905.40 : 2,636,858.10 = 428,209.40 : x
  2. Step 2: Convert to fraction form
    1,757,905.40/2,636,858.10 = 428,209.40/x
  3. Step 3: Cross multiply
    1,757,905.40x = 2,636,858.10 × 428,209.40
  4. Step 4: Simplify right side
    1,757,905.40x = 1,129,127,424,886.14
  5. Step 5: Solve for x
    x = 1,129,127,424,886.14/1,757,905.40
  6. Step 6: Final answer
    x = 642,314.10

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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.