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Finding the Fourth Proportional to 615,319.40, 849,183.40 and 343,440.33

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Solution

The fourth proportional to 615,319.40, 849,183.40 and 343,440.33 is: 473,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,319.40 : 849,183.40 = 343,440.33 : x
  2. Step 2: Convert to fraction form
    615,319.40/849,183.40 = 343,440.33/x
  3. Step 3: Cross multiply
    615,319.40x = 849,183.40 × 343,440.33
  4. Step 4: Simplify right side
    615,319.40x = 291,643,824,827.86
  5. Step 5: Solve for x
    x = 291,643,824,827.86/615,319.40
  6. Step 6: Final answer
    x = 473,971.45

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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.