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Finding the Fourth Proportional to 538,155.48, 805,989.06 and 519,493.08

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Solution

The fourth proportional to 538,155.48, 805,989.06 and 519,493.08 is: 778,038.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,155.48 : 805,989.06 = 519,493.08 : x
  2. Step 2: Convert to fraction form
    538,155.48/805,989.06 = 519,493.08/x
  3. Step 3: Cross multiply
    538,155.48x = 805,989.06 × 519,493.08
  4. Step 4: Simplify right side
    538,155.48x = 418,705,739,225.71
  5. Step 5: Solve for x
    x = 418,705,739,225.71/538,155.48
  6. Step 6: Final answer
    x = 778,038.61

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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.