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Finding the Fourth Proportional to 879,875.77, 1,214,228.56 and 477,467.77

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Solution

The fourth proportional to 879,875.77, 1,214,228.56 and 477,467.77 is: 658,905.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,875.77 : 1,214,228.56 = 477,467.77 : x
  2. Step 2: Convert to fraction form
    879,875.77/1,214,228.56 = 477,467.77/x
  3. Step 3: Cross multiply
    879,875.77x = 1,214,228.56 × 477,467.77
  4. Step 4: Simplify right side
    879,875.77x = 579,755,002,813.51
  5. Step 5: Solve for x
    x = 579,755,002,813.51/879,875.77
  6. Step 6: Final answer
    x = 658,905.52

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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.