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Finding the Fourth Proportional to 608,862.06, 909,559.61 and 438,932.16

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Solution

The fourth proportional to 608,862.06, 909,559.61 and 438,932.16 is: 655,706.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,862.06 : 909,559.61 = 438,932.16 : x
  2. Step 2: Convert to fraction form
    608,862.06/909,559.61 = 438,932.16/x
  3. Step 3: Cross multiply
    608,862.06x = 909,559.61 × 438,932.16
  4. Step 4: Simplify right side
    608,862.06x = 399,234,962,071.40
  5. Step 5: Solve for x
    x = 399,234,962,071.40/608,862.06
  6. Step 6: Final answer
    x = 655,706.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.