Home / 827,009.10-1,240,513.65-353,742.30

Finding the Fourth Proportional to 827,009.10, 1,240,513.65 and 353,742.30

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Solution

The fourth proportional to 827,009.10, 1,240,513.65 and 353,742.30 is: 530,613.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,009.10 : 1,240,513.65 = 353,742.30 : x
  2. Step 2: Convert to fraction form
    827,009.10/1,240,513.65 = 353,742.30/x
  3. Step 3: Cross multiply
    827,009.10x = 1,240,513.65 × 353,742.30
  4. Step 4: Simplify right side
    827,009.10x = 438,822,151,732.40
  5. Step 5: Solve for x
    x = 438,822,151,732.40/827,009.10
  6. Step 6: Final answer
    x = 530,613.45

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Double scale
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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.