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Finding the Fourth Proportional to 675,802.72, 932,379.96 and 389,315.44

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Solution

The fourth proportional to 675,802.72, 932,379.96 and 389,315.44 is: 537,124.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,802.72 : 932,379.96 = 389,315.44 : x
  2. Step 2: Convert to fraction form
    675,802.72/932,379.96 = 389,315.44/x
  3. Step 3: Cross multiply
    675,802.72x = 932,379.96 × 389,315.44
  4. Step 4: Simplify right side
    675,802.72x = 362,989,914,374.58
  5. Step 5: Solve for x
    x = 362,989,914,374.58/675,802.72
  6. Step 6: Final answer
    x = 537,124.08

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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.