Home / 961,750.20-1,443,143.70-400,841.40

Finding the Fourth Proportional to 961,750.20, 1,443,143.70 and 400,841.40

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Solution

The fourth proportional to 961,750.20, 1,443,143.70 and 400,841.40 is: 601,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,750.20 : 1,443,143.70 = 400,841.40 : x
  2. Step 2: Convert to fraction form
    961,750.20/1,443,143.70 = 400,841.40/x
  3. Step 3: Cross multiply
    961,750.20x = 1,443,143.70 × 400,841.40
  4. Step 4: Simplify right side
    961,750.20x = 578,471,741,109.18
  5. Step 5: Solve for x
    x = 578,471,741,109.18/961,750.20
  6. Step 6: Final answer
    x = 601,478.16

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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.