Home / 1,281,038.90-1,767,653.08-729,769.10

Finding the Fourth Proportional to 1,281,038.90, 1,767,653.08 and 729,769.10

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Solution

The fourth proportional to 1,281,038.90, 1,767,653.08 and 729,769.10 is: 1,006,978.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,038.90 : 1,767,653.08 = 729,769.10 : x
  2. Step 2: Convert to fraction form
    1,281,038.90/1,767,653.08 = 729,769.10/x
  3. Step 3: Cross multiply
    1,281,038.90x = 1,767,653.08 × 729,769.10
  4. Step 4: Simplify right side
    1,281,038.90x = 1,289,978,586,641.14
  5. Step 5: Solve for x
    x = 1,289,978,586,641.14/1,281,038.90
  6. Step 6: Final answer
    x = 1,006,978.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.