Home / 1,231,298,036.40-1,699,192,929.24-666,783,892.16

Finding the Fourth Proportional to 1,231,298,036.40, 1,699,192,929.24 and 666,783,892.16

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Solution

The fourth proportional to 1,231,298,036.40, 1,699,192,929.24 and 666,783,892.16 is: 920,162,658.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,298,036.40 : 1,699,192,929.24 = 666,783,892.16 : x
  2. Step 2: Convert to fraction form
    1,231,298,036.40/1,699,192,929.24 = 666,783,892.16/x
  3. Step 3: Cross multiply
    1,231,298,036.40x = 1,699,192,929.24 × 666,783,892.16
  4. Step 4: Simplify right side
    1,231,298,036.40x = 1,132,994,474,889,398,656
  5. Step 5: Solve for x
    x = 1,132,994,474,889,398,656/1,231,298,036.40
  6. Step 6: Final answer
    x = 920,162,658.75

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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.