Home / 756,421.20-1,134,631.80-401,252.40

Finding the Fourth Proportional to 756,421.20, 1,134,631.80 and 401,252.40

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Solution

The fourth proportional to 756,421.20, 1,134,631.80 and 401,252.40 is: 601,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,421.20 : 1,134,631.80 = 401,252.40 : x
  2. Step 2: Convert to fraction form
    756,421.20/1,134,631.80 = 401,252.40/x
  3. Step 3: Cross multiply
    756,421.20x = 1,134,631.80 × 401,252.40
  4. Step 4: Simplify right side
    756,421.20x = 455,273,732,866.32
  5. Step 5: Solve for x
    x = 455,273,732,866.32/756,421.20
  6. Step 6: Final answer
    x = 601,878.60

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Similar ratio
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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.