Home / 1,385,298.05-2,078,258.72-486,801.90

Finding the Fourth Proportional to 1,385,298.05, 2,078,258.72 and 486,801.90

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Solution

The fourth proportional to 1,385,298.05, 2,078,258.72 and 486,801.90 is: 730,312.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,298.05 : 2,078,258.72 = 486,801.90 : x
  2. Step 2: Convert to fraction form
    1,385,298.05/2,078,258.72 = 486,801.90/x
  3. Step 3: Cross multiply
    1,385,298.05x = 2,078,258.72 × 486,801.90
  4. Step 4: Simplify right side
    1,385,298.05x = 1,011,700,291,153.56
  5. Step 5: Solve for x
    x = 1,011,700,291,153.56/1,385,298.05
  6. Step 6: Final answer
    x = 730,312.36

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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.