Home / 912,135.33-1,368,426-642,788.87

Finding the Fourth Proportional to 912,135.33, 1,368,426 and 642,788.87

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Solution

The fourth proportional to 912,135.33, 1,368,426 and 642,788.87 is: 964,340.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,135.33 : 1,368,426 = 642,788.87 : x
  2. Step 2: Convert to fraction form
    912,135.33/1,368,426 = 642,788.87/x
  3. Step 3: Cross multiply
    912,135.33x = 1,368,426 × 642,788.87
  4. Step 4: Simplify right side
    912,135.33x = 879,608,995,376.49
  5. Step 5: Solve for x
    x = 879,608,995,376.49/912,135.33
  6. Step 6: Final answer
    x = 964,340.45

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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.