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Finding the Fourth Proportional to 615,730.20, 849,699.48 and 343,802.64

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Solution

The fourth proportional to 615,730.20, 849,699.48 and 343,802.64 is: 474,443.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,730.20 : 849,699.48 = 343,802.64 : x
  2. Step 2: Convert to fraction form
    615,730.20/849,699.48 = 343,802.64/x
  3. Step 3: Cross multiply
    615,730.20x = 849,699.48 × 343,802.64
  4. Step 4: Simplify right side
    615,730.20x = 292,128,924,430.63
  5. Step 5: Solve for x
    x = 292,128,924,430.63/615,730.20
  6. Step 6: Final answer
    x = 474,443.07

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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.