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Finding the Fourth Proportional to 915,735, 1,263,717.93 and 507,874.74

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Solution

The fourth proportional to 915,735, 1,263,717.93 and 507,874.74 is: 700,869.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,735 : 1,263,717.93 = 507,874.74 : x
  2. Step 2: Convert to fraction form
    915,735/1,263,717.93 = 507,874.74/x
  3. Step 3: Cross multiply
    915,735x = 1,263,717.93 × 507,874.74
  4. Step 4: Simplify right side
    915,735x = 641,810,415,132.09
  5. Step 5: Solve for x
    x = 641,810,415,132.09/915,735
  6. Step 6: Final answer
    x = 700,869.15

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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.