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Finding the Fourth Proportional to 630,676.32, 871,281.20 and 413,400.72

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Solution

The fourth proportional to 630,676.32, 871,281.20 and 413,400.72 is: 571,114.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,676.32 : 871,281.20 = 413,400.72 : x
  2. Step 2: Convert to fraction form
    630,676.32/871,281.20 = 413,400.72/x
  3. Step 3: Cross multiply
    630,676.32x = 871,281.20 × 413,400.72
  4. Step 4: Simplify right side
    630,676.32x = 360,188,275,402.46
  5. Step 5: Solve for x
    x = 360,188,275,402.46/630,676.32
  6. Step 6: Final answer
    x = 571,114.32

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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.