Home / 879,666.35-1,213,810.47-492,461.63

Finding the Fourth Proportional to 879,666.35, 1,213,810.47 and 492,461.63

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Solution

The fourth proportional to 879,666.35, 1,213,810.47 and 492,461.63 is: 679,524.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,666.35 : 1,213,810.47 = 492,461.63 : x
  2. Step 2: Convert to fraction form
    879,666.35/1,213,810.47 = 492,461.63/x
  3. Step 3: Cross multiply
    879,666.35x = 1,213,810.47 × 492,461.63
  4. Step 4: Simplify right side
    879,666.35x = 597,755,082,567.27
  5. Step 5: Solve for x
    x = 597,755,082,567.27/879,666.35
  6. Step 6: Final answer
    x = 679,524.78

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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.