Home / 687,265.72-1,030,484.25-308,117.92

Finding the Fourth Proportional to 687,265.72, 1,030,484.25 and 308,117.92

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Solution

The fourth proportional to 687,265.72, 1,030,484.25 and 308,117.92 is: 461,991.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,265.72 : 1,030,484.25 = 308,117.92 : x
  2. Step 2: Convert to fraction form
    687,265.72/1,030,484.25 = 308,117.92/x
  3. Step 3: Cross multiply
    687,265.72x = 1,030,484.25 × 308,117.92
  4. Step 4: Simplify right side
    687,265.72x = 317,510,663,702.76
  5. Step 5: Solve for x
    x = 317,510,663,702.76/687,265.72
  6. Step 6: Final answer
    x = 461,991.13

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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.