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Finding the Fourth Proportional to 570,316.90, 787,212.66 and 328,761.04

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Solution

The fourth proportional to 570,316.90, 787,212.66 and 328,761.04 is: 453,791.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,316.90 : 787,212.66 = 328,761.04 : x
  2. Step 2: Convert to fraction form
    570,316.90/787,212.66 = 328,761.04/x
  3. Step 3: Cross multiply
    570,316.90x = 787,212.66 × 328,761.04
  4. Step 4: Simplify right side
    570,316.90x = 258,804,852,802.77
  5. Step 5: Solve for x
    x = 258,804,852,802.77/570,316.90
  6. Step 6: Final answer
    x = 453,791.31

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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.