Home / 917,580.60-1,266,218.37-509,708.70

Finding the Fourth Proportional to 917,580.60, 1,266,218.37 and 509,708.70

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Solution

The fourth proportional to 917,580.60, 1,266,218.37 and 509,708.70 is: 703,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,580.60 : 1,266,218.37 = 509,708.70 : x
  2. Step 2: Convert to fraction form
    917,580.60/1,266,218.37 = 509,708.70/x
  3. Step 3: Cross multiply
    917,580.60x = 1,266,218.37 × 509,708.70
  4. Step 4: Simplify right side
    917,580.60x = 645,402,519,288.82
  5. Step 5: Solve for x
    x = 645,402,519,288.82/917,580.60
  6. Step 6: Final answer
    x = 703,374.20

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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.