Home / 661,723.10-992,584.65-409,780.70

Finding the Fourth Proportional to 661,723.10, 992,584.65 and 409,780.70

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Solution

The fourth proportional to 661,723.10, 992,584.65 and 409,780.70 is: 614,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,723.10 : 992,584.65 = 409,780.70 : x
  2. Step 2: Convert to fraction form
    661,723.10/992,584.65 = 409,780.70/x
  3. Step 3: Cross multiply
    661,723.10x = 992,584.65 × 409,780.70
  4. Step 4: Simplify right side
    661,723.10x = 406,742,032,686.26
  5. Step 5: Solve for x
    x = 406,742,032,686.26/661,723.10
  6. Step 6: Final answer
    x = 614,671.05

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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.