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Finding the Fourth Proportional to 1,354,752.57, 1,869,762.93 and 864,931.38

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Solution

The fourth proportional to 1,354,752.57, 1,869,762.93 and 864,931.38 is: 1,193,735.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,752.57 : 1,869,762.93 = 864,931.38 : x
  2. Step 2: Convert to fraction form
    1,354,752.57/1,869,762.93 = 864,931.38/x
  3. Step 3: Cross multiply
    1,354,752.57x = 1,869,762.93 × 864,931.38
  4. Step 4: Simplify right side
    1,354,752.57x = 1,617,216,631,317.74
  5. Step 5: Solve for x
    x = 1,617,216,631,317.74/1,354,752.57
  6. Step 6: Final answer
    x = 1,193,735.79

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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.