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Finding the Fourth Proportional to 615,065.80, 922,598.70 and 377,638.60

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Solution

The fourth proportional to 615,065.80, 922,598.70 and 377,638.60 is: 566,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,065.80 : 922,598.70 = 377,638.60 : x
  2. Step 2: Convert to fraction form
    615,065.80/922,598.70 = 377,638.60/x
  3. Step 3: Cross multiply
    615,065.80x = 922,598.70 × 377,638.60
  4. Step 4: Simplify right side
    615,065.80x = 348,408,881,429.82
  5. Step 5: Solve for x
    x = 348,408,881,429.82/615,065.80
  6. Step 6: Final answer
    x = 566,457.90

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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.