Home / 917,666.28-1,266,581.86-509,908.22

Finding the Fourth Proportional to 917,666.28, 1,266,581.86 and 509,908.22

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Solution

The fourth proportional to 917,666.28, 1,266,581.86 and 509,908.22 is: 703,785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,666.28 : 1,266,581.86 = 509,908.22 : x
  2. Step 2: Convert to fraction form
    917,666.28/1,266,581.86 = 509,908.22/x
  3. Step 3: Cross multiply
    917,666.28x = 1,266,581.86 × 509,908.22
  4. Step 4: Simplify right side
    917,666.28x = 645,840,501,716.89
  5. Step 5: Solve for x
    x = 645,840,501,716.89/917,666.28
  6. Step 6: Final answer
    x = 703,785.81

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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.