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Finding the Fourth Proportional to 615,166.76, 848,400 and 400,228.40

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Solution

The fourth proportional to 615,166.76, 848,400 and 400,228.40 is: 551,970.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,166.76 : 848,400 = 400,228.40 : x
  2. Step 2: Convert to fraction form
    615,166.76/848,400 = 400,228.40/x
  3. Step 3: Cross multiply
    615,166.76x = 848,400 × 400,228.40
  4. Step 4: Simplify right side
    615,166.76x = 339,553,774,560
  5. Step 5: Solve for x
    x = 339,553,774,560/615,166.76
  6. Step 6: Final answer
    x = 551,970.29

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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.