Home / 1,417,639.80-2,125,725.30-420,238.20

Finding the Fourth Proportional to 1,417,639.80, 2,125,725.30 and 420,238.20

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Solution

The fourth proportional to 1,417,639.80, 2,125,725.30 and 420,238.20 is: 630,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417,639.80 : 2,125,725.30 = 420,238.20 : x
  2. Step 2: Convert to fraction form
    1,417,639.80/2,125,725.30 = 420,238.20/x
  3. Step 3: Cross multiply
    1,417,639.80x = 2,125,725.30 × 420,238.20
  4. Step 4: Simplify right side
    1,417,639.80x = 893,310,973,766.46
  5. Step 5: Solve for x
    x = 893,310,973,766.46/1,417,639.80
  6. Step 6: Final answer
    x = 630,139.60

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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.