Home / 917,961.93-1,376,942.58-286,875.72

Finding the Fourth Proportional to 917,961.93, 1,376,942.58 and 286,875.72

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Solution

The fourth proportional to 917,961.93, 1,376,942.58 and 286,875.72 is: 430,313.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,961.93 : 1,376,942.58 = 286,875.72 : x
  2. Step 2: Convert to fraction form
    917,961.93/1,376,942.58 = 286,875.72/x
  3. Step 3: Cross multiply
    917,961.93x = 1,376,942.58 × 286,875.72
  4. Step 4: Simplify right side
    917,961.93x = 395,011,394,036.16
  5. Step 5: Solve for x
    x = 395,011,394,036.16/917,961.93
  6. Step 6: Final answer
    x = 430,313.48

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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.