Home / 1,051,504.40-1,577,904.60-420,352.40

Finding the Fourth Proportional to 1,051,504.40, 1,577,904.60 and 420,352.40

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Solution

The fourth proportional to 1,051,504.40, 1,577,904.60 and 420,352.40 is: 630,787.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051,504.40 : 1,577,904.60 = 420,352.40 : x
  2. Step 2: Convert to fraction form
    1,051,504.40/1,577,904.60 = 420,352.40/x
  3. Step 3: Cross multiply
    1,051,504.40x = 1,577,904.60 × 420,352.40
  4. Step 4: Simplify right side
    1,051,504.40x = 663,275,985,581.04
  5. Step 5: Solve for x
    x = 663,275,985,581.04/1,051,504.40
  6. Step 6: Final answer
    x = 630,787.65

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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.