Home / 661,623.60-992,435.40-474,999.60

Finding the Fourth Proportional to 661,623.60, 992,435.40 and 474,999.60

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Solution

The fourth proportional to 661,623.60, 992,435.40 and 474,999.60 is: 712,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,623.60 : 992,435.40 = 474,999.60 : x
  2. Step 2: Convert to fraction form
    661,623.60/992,435.40 = 474,999.60/x
  3. Step 3: Cross multiply
    661,623.60x = 992,435.40 × 474,999.60
  4. Step 4: Simplify right side
    661,623.60x = 471,406,418,025.84
  5. Step 5: Solve for x
    x = 471,406,418,025.84/661,623.60
  6. Step 6: Final answer
    x = 712,499.40

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Half scale
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Double scale
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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.