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Finding the Fourth Proportional to 771,294.30, 1,064,355.03 and 449,013.66

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Solution

The fourth proportional to 771,294.30, 1,064,355.03 and 449,013.66 is: 619,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,294.30 : 1,064,355.03 = 449,013.66 : x
  2. Step 2: Convert to fraction form
    771,294.30/1,064,355.03 = 449,013.66/x
  3. Step 3: Cross multiply
    771,294.30x = 1,064,355.03 × 449,013.66
  4. Step 4: Simplify right side
    771,294.30x = 477,909,947,559.71
  5. Step 5: Solve for x
    x = 477,909,947,559.71/771,294.30
  6. Step 6: Final answer
    x = 619,620.74

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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.