Home / 1,277,457,780.30-1,916,186,670.45-869,311,092.30

Finding the Fourth Proportional to 1,277,457,780.30, 1,916,186,670.45 and 869,311,092.30

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Solution

The fourth proportional to 1,277,457,780.30, 1,916,186,670.45 and 869,311,092.30 is: 1,303,966,638.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,457,780.30 : 1,916,186,670.45 = 869,311,092.30 : x
  2. Step 2: Convert to fraction form
    1,277,457,780.30/1,916,186,670.45 = 869,311,092.30/x
  3. Step 3: Cross multiply
    1,277,457,780.30x = 1,916,186,670.45 × 869,311,092.30
  4. Step 4: Simplify right side
    1,277,457,780.30x = 1,665,762,327,539,589,632
  5. Step 5: Solve for x
    x = 1,665,762,327,539,589,632/1,277,457,780.30
  6. Step 6: Final answer
    x = 1,303,966,638.45

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Double scale
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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.