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Finding the Fourth Proportional to 615,696.12, 849,652.34 and 343,768.20

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Solution

The fourth proportional to 615,696.12, 849,652.34 and 343,768.20 is: 474,395.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,696.12 : 849,652.34 = 343,768.20 : x
  2. Step 2: Convert to fraction form
    615,696.12/849,652.34 = 343,768.20/x
  3. Step 3: Cross multiply
    615,696.12x = 849,652.34 × 343,768.20
  4. Step 4: Simplify right side
    615,696.12x = 292,083,455,547.59
  5. Step 5: Solve for x
    x = 292,083,455,547.59/615,696.12
  6. Step 6: Final answer
    x = 474,395.48

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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.