Home / 917,361.86-1,266,001.40-509,465.50

Finding the Fourth Proportional to 917,361.86, 1,266,001.40 and 509,465.50

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Solution

The fourth proportional to 917,361.86, 1,266,001.40 and 509,465.50 is: 703,085.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,361.86 : 1,266,001.40 = 509,465.50 : x
  2. Step 2: Convert to fraction form
    917,361.86/1,266,001.40 = 509,465.50/x
  3. Step 3: Cross multiply
    917,361.86x = 1,266,001.40 × 509,465.50
  4. Step 4: Simplify right side
    917,361.86x = 644,984,031,494.62
  5. Step 5: Solve for x
    x = 644,984,031,494.62/917,361.86
  6. Step 6: Final answer
    x = 703,085.73

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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.