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Finding the Fourth Proportional to 615,511.90, 849,548.10 and 360,945.10

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Solution

The fourth proportional to 615,511.90, 849,548.10 and 360,945.10 is: 498,187.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,511.90 : 849,548.10 = 360,945.10 : x
  2. Step 2: Convert to fraction form
    615,511.90/849,548.10 = 360,945.10/x
  3. Step 3: Cross multiply
    615,511.90x = 849,548.10 × 360,945.10
  4. Step 4: Simplify right side
    615,511.90x = 306,640,223,909.31
  5. Step 5: Solve for x
    x = 306,640,223,909.31/615,511.90
  6. Step 6: Final answer
    x = 498,187.32

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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.