Home / 615,772,830.25-849,085,566.28-392,400,669.25

Finding the Fourth Proportional to 615,772,830.25, 849,085,566.28 and 392,400,669.25

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Solution

The fourth proportional to 615,772,830.25, 849,085,566.28 and 392,400,669.25 is: 541,078,995.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,772,830.25 : 849,085,566.28 = 392,400,669.25 : x
  2. Step 2: Convert to fraction form
    615,772,830.25/849,085,566.28 = 392,400,669.25/x
  3. Step 3: Cross multiply
    615,772,830.25x = 849,085,566.28 × 392,400,669.25
  4. Step 4: Simplify right side
    615,772,830.25x = 333,181,744,458,787,200
  5. Step 5: Solve for x
    x = 333,181,744,458,787,200/615,772,830.25
  6. Step 6: Final answer
    x = 541,078,995.52

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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.