Home / 917,710.09-1,266,441.28-509,800.84

Finding the Fourth Proportional to 917,710.09, 1,266,441.28 and 509,800.84

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Solution

The fourth proportional to 917,710.09, 1,266,441.28 and 509,800.84 is: 703,525.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,710.09 : 1,266,441.28 = 509,800.84 : x
  2. Step 2: Convert to fraction form
    917,710.09/1,266,441.28 = 509,800.84/x
  3. Step 3: Cross multiply
    917,710.09x = 1,266,441.28 × 509,800.84
  4. Step 4: Simplify right side
    917,710.09x = 645,632,823,914.07
  5. Step 5: Solve for x
    x = 645,632,823,914.07/917,710.09
  6. Step 6: Final answer
    x = 703,525.91

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Double scale
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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.