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Finding the Fourth Proportional to 486,055.40, 729,083.10 and 437,066.60

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Solution

The fourth proportional to 486,055.40, 729,083.10 and 437,066.60 is: 655,599.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,055.40 : 729,083.10 = 437,066.60 : x
  2. Step 2: Convert to fraction form
    486,055.40/729,083.10 = 437,066.60/x
  3. Step 3: Cross multiply
    486,055.40x = 729,083.10 × 437,066.60
  4. Step 4: Simplify right side
    486,055.40x = 318,657,871,634.46
  5. Step 5: Solve for x
    x = 318,657,871,634.46/486,055.40
  6. Step 6: Final answer
    x = 655,599.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.