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Finding the Fourth Proportional to 478,788.03, 660,774.04 and 357,719.15

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Solution

The fourth proportional to 478,788.03, 660,774.04 and 357,719.15 is: 493,687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,788.03 : 660,774.04 = 357,719.15 : x
  2. Step 2: Convert to fraction form
    478,788.03/660,774.04 = 357,719.15/x
  3. Step 3: Cross multiply
    478,788.03x = 660,774.04 × 357,719.15
  4. Step 4: Simplify right side
    478,788.03x = 236,371,528,688.50
  5. Step 5: Solve for x
    x = 236,371,528,688.50/478,788.03
  6. Step 6: Final answer
    x = 493,687.21

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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.