Home / 1,757,903.40-2,636,855.10-428,207.40

Finding the Fourth Proportional to 1,757,903.40, 2,636,855.10 and 428,207.40

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Solution

The fourth proportional to 1,757,903.40, 2,636,855.10 and 428,207.40 is: 642,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,757,903.40 : 2,636,855.10 = 428,207.40 : x
  2. Step 2: Convert to fraction form
    1,757,903.40/2,636,855.10 = 428,207.40/x
  3. Step 3: Cross multiply
    1,757,903.40x = 2,636,855.10 × 428,207.40
  4. Step 4: Simplify right side
    1,757,903.40x = 1,129,120,866,547.74
  5. Step 5: Solve for x
    x = 1,129,120,866,547.74/1,757,903.40
  6. Step 6: Final answer
    x = 642,311.10

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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.