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Finding the Fourth Proportional to 615,336.75, 849,207.31 and 343,457.55

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Solution

The fourth proportional to 615,336.75, 849,207.31 and 343,457.55 is: 473,995.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,336.75 : 849,207.31 = 343,457.55 : x
  2. Step 2: Convert to fraction form
    615,336.75/849,207.31 = 343,457.55/x
  3. Step 3: Cross multiply
    615,336.75x = 849,207.31 × 343,457.55
  4. Step 4: Simplify right side
    615,336.75x = 291,666,661,276.05
  5. Step 5: Solve for x
    x = 291,666,661,276.05/615,336.75
  6. Step 6: Final answer
    x = 473,995.19

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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.