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Finding the Fourth Proportional to 539,434.40, 808,460.40 and 479,991.20

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Solution

The fourth proportional to 539,434.40, 808,460.40 and 479,991.20 is: 719,371.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,434.40 : 808,460.40 = 479,991.20 : x
  2. Step 2: Convert to fraction form
    539,434.40/808,460.40 = 479,991.20/x
  3. Step 3: Cross multiply
    539,434.40x = 808,460.40 × 479,991.20
  4. Step 4: Simplify right side
    539,434.40x = 388,053,877,548.48
  5. Step 5: Solve for x
    x = 388,053,877,548.48/539,434.40
  6. Step 6: Final answer
    x = 719,371.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.