Home / 771,403.40-1,064,602.56-449,214.56

Finding the Fourth Proportional to 771,403.40, 1,064,602.56 and 449,214.56

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Solution

The fourth proportional to 771,403.40, 1,064,602.56 and 449,214.56 is: 619,954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,403.40 : 1,064,602.56 = 449,214.56 : x
  2. Step 2: Convert to fraction form
    771,403.40/1,064,602.56 = 449,214.56/x
  3. Step 3: Cross multiply
    771,403.40x = 1,064,602.56 × 449,214.56
  4. Step 4: Simplify right side
    771,403.40x = 478,234,970,565.27
  5. Step 5: Solve for x
    x = 478,234,970,565.27/771,403.40
  6. Step 6: Final answer
    x = 619,954.45

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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.