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Finding the Fourth Proportional to 682,488.64, 941,854.40 and 380,676.16

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Solution

The fourth proportional to 682,488.64, 941,854.40 and 380,676.16 is: 525,344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,488.64 : 941,854.40 = 380,676.16 : x
  2. Step 2: Convert to fraction form
    682,488.64/941,854.40 = 380,676.16/x
  3. Step 3: Cross multiply
    682,488.64x = 941,854.40 × 380,676.16
  4. Step 4: Simplify right side
    682,488.64x = 358,541,516,271.10
  5. Step 5: Solve for x
    x = 358,541,516,271.10/682,488.64
  6. Step 6: Final answer
    x = 525,344.30

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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.