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Finding the Fourth Proportional to 961,751.72, 1,442,758.88 and 400,655

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Solution

The fourth proportional to 961,751.72, 1,442,758.88 and 400,655 is: 601,037.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,751.72 : 1,442,758.88 = 400,655 : x
  2. Step 2: Convert to fraction form
    961,751.72/1,442,758.88 = 400,655/x
  3. Step 3: Cross multiply
    961,751.72x = 1,442,758.88 × 400,655
  4. Step 4: Simplify right side
    961,751.72x = 578,048,559,066.40
  5. Step 5: Solve for x
    x = 578,048,559,066.40/961,751.72
  6. Step 6: Final answer
    x = 601,037.20

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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.