Home / 917,769.40-1,266,536.70-509,897.56

Finding the Fourth Proportional to 917,769.40, 1,266,536.70 and 509,897.56

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Solution

The fourth proportional to 917,769.40, 1,266,536.70 and 509,897.56 is: 703,666.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,769.40 : 1,266,536.70 = 509,897.56 : x
  2. Step 2: Convert to fraction form
    917,769.40/1,266,536.70 = 509,897.56/x
  3. Step 3: Cross multiply
    917,769.40x = 1,266,536.70 × 509,897.56
  4. Step 4: Simplify right side
    917,769.40x = 645,803,972,980.45
  5. Step 5: Solve for x
    x = 645,803,972,980.45/917,769.40
  6. Step 6: Final answer
    x = 703,666.93

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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.