Home / 1,112,269.80-1,668,404.70-402,407.40

Finding the Fourth Proportional to 1,112,269.80, 1,668,404.70 and 402,407.40

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Solution

The fourth proportional to 1,112,269.80, 1,668,404.70 and 402,407.40 is: 603,611.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,269.80 : 1,668,404.70 = 402,407.40 : x
  2. Step 2: Convert to fraction form
    1,112,269.80/1,668,404.70 = 402,407.40/x
  3. Step 3: Cross multiply
    1,112,269.80x = 1,668,404.70 × 402,407.40
  4. Step 4: Simplify right side
    1,112,269.80x = 671,378,397,474.78
  5. Step 5: Solve for x
    x = 671,378,397,474.78/1,112,269.80
  6. Step 6: Final answer
    x = 603,611.10

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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.