Home / 1,421,457-2,132,554.86-424,185

Finding the Fourth Proportional to 1,421,457, 2,132,554.86 and 424,185

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Solution

The fourth proportional to 1,421,457, 2,132,554.86 and 424,185 is: 636,387.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,457 : 2,132,554.86 = 424,185 : x
  2. Step 2: Convert to fraction form
    1,421,457/2,132,554.86 = 424,185/x
  3. Step 3: Cross multiply
    1,421,457x = 2,132,554.86 × 424,185
  4. Step 4: Simplify right side
    1,421,457x = 904,597,783,289.10
  5. Step 5: Solve for x
    x = 904,597,783,289.10/1,421,457
  6. Step 6: Final answer
    x = 636,387.72

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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.