Home / 919,051.80-1,266,885.81-646,376.64

Finding the Fourth Proportional to 919,051.80, 1,266,885.81 and 646,376.64

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Solution

The fourth proportional to 919,051.80, 1,266,885.81 and 646,376.64 is: 891,011.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,051.80 : 1,266,885.81 = 646,376.64 : x
  2. Step 2: Convert to fraction form
    919,051.80/1,266,885.81 = 646,376.64/x
  3. Step 3: Cross multiply
    919,051.80x = 1,266,885.81 × 646,376.64
  4. Step 4: Simplify right side
    919,051.80x = 818,885,393,131.48
  5. Step 5: Solve for x
    x = 818,885,393,131.48/919,051.80
  6. Step 6: Final answer
    x = 891,011.14

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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.