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Finding the Fourth Proportional to 763,779.76, 1,054,049.43 and 424,248.01

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Solution

The fourth proportional to 763,779.76, 1,054,049.43 and 424,248.01 is: 585,480.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,779.76 : 1,054,049.43 = 424,248.01 : x
  2. Step 2: Convert to fraction form
    763,779.76/1,054,049.43 = 424,248.01/x
  3. Step 3: Cross multiply
    763,779.76x = 1,054,049.43 × 424,248.01
  4. Step 4: Simplify right side
    763,779.76x = 447,178,373,119.13
  5. Step 5: Solve for x
    x = 447,178,373,119.13/763,779.76
  6. Step 6: Final answer
    x = 585,480.78

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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.