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Finding the Fourth Proportional to 867,101.40, 1,300,652.10 and 334,639.80

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Solution

The fourth proportional to 867,101.40, 1,300,652.10 and 334,639.80 is: 501,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,101.40 : 1,300,652.10 = 334,639.80 : x
  2. Step 2: Convert to fraction form
    867,101.40/1,300,652.10 = 334,639.80/x
  3. Step 3: Cross multiply
    867,101.40x = 1,300,652.10 × 334,639.80
  4. Step 4: Simplify right side
    867,101.40x = 435,249,958,613.58
  5. Step 5: Solve for x
    x = 435,249,958,613.58/867,101.40
  6. Step 6: Final answer
    x = 501,959.70

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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.