Home / 1,078,632.95-1,618,567.63-438,818.61

Finding the Fourth Proportional to 1,078,632.95, 1,618,567.63 and 438,818.61

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Solution

The fourth proportional to 1,078,632.95, 1,618,567.63 and 438,818.61 is: 658,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,632.95 : 1,618,567.63 = 438,818.61 : x
  2. Step 2: Convert to fraction form
    1,078,632.95/1,618,567.63 = 438,818.61/x
  3. Step 3: Cross multiply
    1,078,632.95x = 1,618,567.63 × 438,818.61
  4. Step 4: Simplify right side
    1,078,632.95x = 710,257,596,490.55
  5. Step 5: Solve for x
    x = 710,257,596,490.55/1,078,632.95
  6. Step 6: Final answer
    x = 658,479.42

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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.