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Finding the Fourth Proportional to 615,394.89, 849,242.61 and 343,459.80

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Solution

The fourth proportional to 615,394.89, 849,242.61 and 343,459.80 is: 473,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,394.89 : 849,242.61 = 343,459.80 : x
  2. Step 2: Convert to fraction form
    615,394.89/849,242.61 = 343,459.80/x
  3. Step 3: Cross multiply
    615,394.89x = 849,242.61 × 343,459.80
  4. Step 4: Simplify right side
    615,394.89x = 291,680,696,982.08
  5. Step 5: Solve for x
    x = 291,680,696,982.08/615,394.89
  6. Step 6: Final answer
    x = 473,973.22

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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.