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Finding the Fourth Proportional to 615,445.72, 849,316.07 and 343,513.54

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Solution

The fourth proportional to 615,445.72, 849,316.07 and 343,513.54 is: 474,049.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,445.72 : 849,316.07 = 343,513.54 : x
  2. Step 2: Convert to fraction form
    615,445.72/849,316.07 = 343,513.54/x
  3. Step 3: Cross multiply
    615,445.72x = 849,316.07 × 343,513.54
  4. Step 4: Simplify right side
    615,445.72x = 291,751,571,030.82
  5. Step 5: Solve for x
    x = 291,751,571,030.82/615,445.72
  6. Step 6: Final answer
    x = 474,049.23

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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.