Home / 838,291.52-1,154,638.60-644,328.32

Finding the Fourth Proportional to 838,291.52, 1,154,638.60 and 644,328.32

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Solution

The fourth proportional to 838,291.52, 1,154,638.60 and 644,328.32 is: 887,479.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,291.52 : 1,154,638.60 = 644,328.32 : x
  2. Step 2: Convert to fraction form
    838,291.52/1,154,638.60 = 644,328.32/x
  3. Step 3: Cross multiply
    838,291.52x = 1,154,638.60 × 644,328.32
  4. Step 4: Simplify right side
    838,291.52x = 743,966,341,961.14
  5. Step 5: Solve for x
    x = 743,966,341,961.14/838,291.52
  6. Step 6: Final answer
    x = 887,479.27

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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.