Home / 1,273,355.64-1,909,627.45-420,268.91

Finding the Fourth Proportional to 1,273,355.64, 1,909,627.45 and 420,268.91

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Solution

The fourth proportional to 1,273,355.64, 1,909,627.45 and 420,268.91 is: 630,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,355.64 : 1,909,627.45 = 420,268.91 : x
  2. Step 2: Convert to fraction form
    1,273,355.64/1,909,627.45 = 420,268.91/x
  3. Step 3: Cross multiply
    1,273,355.64x = 1,909,627.45 × 420,268.91
  4. Step 4: Simplify right side
    1,273,355.64x = 802,557,036,318.77
  5. Step 5: Solve for x
    x = 802,557,036,318.77/1,273,355.64
  6. Step 6: Final answer
    x = 630,269.35

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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.