Home / 917,667.96-1,266,584.34-509,910

Finding the Fourth Proportional to 917,667.96, 1,266,584.34 and 509,910

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Solution

The fourth proportional to 917,667.96, 1,266,584.34 and 509,910 is: 703,788.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,667.96 : 1,266,584.34 = 509,910 : x
  2. Step 2: Convert to fraction form
    917,667.96/1,266,584.34 = 509,910/x
  3. Step 3: Cross multiply
    917,667.96x = 1,266,584.34 × 509,910
  4. Step 4: Simplify right side
    917,667.96x = 645,844,020,809.40
  5. Step 5: Solve for x
    x = 645,844,020,809.40/917,667.96
  6. Step 6: Final answer
    x = 703,788.35

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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.