Home / 917,986.90-1,376,981.43-286,904.02

Finding the Fourth Proportional to 917,986.90, 1,376,981.43 and 286,904.02

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Solution

The fourth proportional to 917,986.90, 1,376,981.43 and 286,904.02 is: 430,356.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,986.90 : 1,376,981.43 = 286,904.02 : x
  2. Step 2: Convert to fraction form
    917,986.90/1,376,981.43 = 286,904.02/x
  3. Step 3: Cross multiply
    917,986.90x = 1,376,981.43 × 286,904.02
  4. Step 4: Simplify right side
    917,986.90x = 395,061,507,732.35
  5. Step 5: Solve for x
    x = 395,061,507,732.35/917,986.90
  6. Step 6: Final answer
    x = 430,356.37

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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.