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Finding the Fourth Proportional to 615,280.46, 849,087.18 and 339,638.46

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Solution

The fourth proportional to 615,280.46, 849,087.18 and 339,638.46 is: 468,701.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,280.46 : 849,087.18 = 339,638.46 : x
  2. Step 2: Convert to fraction form
    615,280.46/849,087.18 = 339,638.46/x
  3. Step 3: Cross multiply
    615,280.46x = 849,087.18 × 339,638.46
  4. Step 4: Simplify right side
    615,280.46x = 288,382,662,220.94
  5. Step 5: Solve for x
    x = 288,382,662,220.94/615,280.46
  6. Step 6: Final answer
    x = 468,701.16

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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.