Home / 638,702.14-881,421.72-412,741.30

Finding the Fourth Proportional to 638,702.14, 881,421.72 and 412,741.30

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Solution

The fourth proportional to 638,702.14, 881,421.72 and 412,741.30 is: 569,591.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,702.14 : 881,421.72 = 412,741.30 : x
  2. Step 2: Convert to fraction form
    638,702.14/881,421.72 = 412,741.30/x
  3. Step 3: Cross multiply
    638,702.14x = 881,421.72 × 412,741.30
  4. Step 4: Simplify right side
    638,702.14x = 363,799,146,561.04
  5. Step 5: Solve for x
    x = 363,799,146,561.04/638,702.14
  6. Step 6: Final answer
    x = 569,591.24

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Double scale
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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.