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Finding the Fourth Proportional to 553,664.10, 830,496.15 and 465,090.60

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Solution

The fourth proportional to 553,664.10, 830,496.15 and 465,090.60 is: 697,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,664.10 : 830,496.15 = 465,090.60 : x
  2. Step 2: Convert to fraction form
    553,664.10/830,496.15 = 465,090.60/x
  3. Step 3: Cross multiply
    553,664.10x = 830,496.15 × 465,090.60
  4. Step 4: Simplify right side
    553,664.10x = 386,255,952,701.19
  5. Step 5: Solve for x
    x = 386,255,952,701.19/553,664.10
  6. Step 6: Final answer
    x = 697,635.90

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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.