Home / 918,665.84-1,268,113.38-612,631.64

Finding the Fourth Proportional to 918,665.84, 1,268,113.38 and 612,631.64

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Solution

The fourth proportional to 918,665.84, 1,268,113.38 and 612,631.64 is: 845,668.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,665.84 : 1,268,113.38 = 612,631.64 : x
  2. Step 2: Convert to fraction form
    918,665.84/1,268,113.38 = 612,631.64/x
  3. Step 3: Cross multiply
    918,665.84x = 1,268,113.38 × 612,631.64
  4. Step 4: Simplify right side
    918,665.84x = 776,886,379,695.34
  5. Step 5: Solve for x
    x = 776,886,379,695.34/918,665.84
  6. Step 6: Final answer
    x = 845,668.08

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1.5x scale

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.