Home / 917,914.79-1,376,871.94-286,828.61

Finding the Fourth Proportional to 917,914.79, 1,376,871.94 and 286,828.61

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Solution

The fourth proportional to 917,914.79, 1,376,871.94 and 286,828.61 is: 430,242.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,914.79 : 1,376,871.94 = 286,828.61 : x
  2. Step 2: Convert to fraction form
    917,914.79/1,376,871.94 = 286,828.61/x
  3. Step 3: Cross multiply
    917,914.79x = 1,376,871.94 × 286,828.61
  4. Step 4: Simplify right side
    917,914.79x = 394,926,264,698.20
  5. Step 5: Solve for x
    x = 394,926,264,698.20/917,914.79
  6. Step 6: Final answer
    x = 430,242.84

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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.