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Finding the Fourth Proportional to 615,802.87, 849,765.62 and 340,148.53

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Solution

The fourth proportional to 615,802.87, 849,765.62 and 340,148.53 is: 469,381.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,802.87 : 849,765.62 = 340,148.53 : x
  2. Step 2: Convert to fraction form
    615,802.87/849,765.62 = 340,148.53/x
  3. Step 3: Cross multiply
    615,802.87x = 849,765.62 × 340,148.53
  4. Step 4: Simplify right side
    615,802.87x = 289,046,525,213.50
  5. Step 5: Solve for x
    x = 289,046,525,213.50/615,802.87
  6. Step 6: Final answer
    x = 469,381.58

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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.