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Finding the Fourth Proportional to 879,892.86, 1,214,252.10 and 477,484.86

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Solution

The fourth proportional to 879,892.86, 1,214,252.10 and 477,484.86 is: 658,929.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,892.86 : 1,214,252.10 = 477,484.86 : x
  2. Step 2: Convert to fraction form
    879,892.86/1,214,252.10 = 477,484.86/x
  3. Step 3: Cross multiply
    879,892.86x = 1,214,252.10 × 477,484.86
  4. Step 4: Simplify right side
    879,892.86x = 579,786,993,973.21
  5. Step 5: Solve for x
    x = 579,786,993,973.21/879,892.86
  6. Step 6: Final answer
    x = 658,929.08

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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.