Home / 778,516.93-1,074,385.25-491,932.45

Finding the Fourth Proportional to 778,516.93, 1,074,385.25 and 491,932.45

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Solution

The fourth proportional to 778,516.93, 1,074,385.25 and 491,932.45 is: 678,886.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,516.93 : 1,074,385.25 = 491,932.45 : x
  2. Step 2: Convert to fraction form
    778,516.93/1,074,385.25 = 491,932.45/x
  3. Step 3: Cross multiply
    778,516.93x = 1,074,385.25 × 491,932.45
  4. Step 4: Simplify right side
    778,516.93x = 528,524,968,276.36
  5. Step 5: Solve for x
    x = 528,524,968,276.36/778,516.93
  6. Step 6: Final answer
    x = 678,886.93

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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.