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Finding the Fourth Proportional to 1,355,199, 1,870,514.46 and 920,352.12

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Solution

The fourth proportional to 1,355,199, 1,870,514.46 and 920,352.12 is: 1,270,316.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,199 : 1,870,514.46 = 920,352.12 : x
  2. Step 2: Convert to fraction form
    1,355,199/1,870,514.46 = 920,352.12/x
  3. Step 3: Cross multiply
    1,355,199x = 1,870,514.46 × 920,352.12
  4. Step 4: Simplify right side
    1,355,199x = 1,721,531,948,751.66
  5. Step 5: Solve for x
    x = 1,721,531,948,751.66/1,355,199
  6. Step 6: Final answer
    x = 1,270,316.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.