Home / 1,191,130,342.80-1,786,695,514.20-915,631,328.40

Finding the Fourth Proportional to 1,191,130,342.80, 1,786,695,514.20 and 915,631,328.40

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Solution

The fourth proportional to 1,191,130,342.80, 1,786,695,514.20 and 915,631,328.40 is: 1,373,446,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,130,342.80 : 1,786,695,514.20 = 915,631,328.40 : x
  2. Step 2: Convert to fraction form
    1,191,130,342.80/1,786,695,514.20 = 915,631,328.40/x
  3. Step 3: Cross multiply
    1,191,130,342.80x = 1,786,695,514.20 × 915,631,328.40
  4. Step 4: Simplify right side
    1,191,130,342.80x = 1,635,954,387,113,266,944
  5. Step 5: Solve for x
    x = 1,635,954,387,113,266,944/1,191,130,342.80
  6. Step 6: Final answer
    x = 1,373,446,992.60

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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.