Home / 1,399,459.92-1,931,174.76-787,638.16

Finding the Fourth Proportional to 1,399,459.92, 1,931,174.76 and 787,638.16

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Solution

The fourth proportional to 1,399,459.92, 1,931,174.76 and 787,638.16 is: 1,086,895.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,459.92 : 1,931,174.76 = 787,638.16 : x
  2. Step 2: Convert to fraction form
    1,399,459.92/1,931,174.76 = 787,638.16/x
  3. Step 3: Cross multiply
    1,399,459.92x = 1,931,174.76 × 787,638.16
  4. Step 4: Simplify right side
    1,399,459.92x = 1,521,066,934,604.84
  5. Step 5: Solve for x
    x = 1,521,066,934,604.84/1,399,459.92
  6. Step 6: Final answer
    x = 1,086,895.68

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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.