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Finding the Fourth Proportional to 578,670.79, 864,486.63 and 374,604.45

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Solution

The fourth proportional to 578,670.79, 864,486.63 and 374,604.45 is: 559,628.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,670.79 : 864,486.63 = 374,604.45 : x
  2. Step 2: Convert to fraction form
    578,670.79/864,486.63 = 374,604.45/x
  3. Step 3: Cross multiply
    578,670.79x = 864,486.63 × 374,604.45
  4. Step 4: Simplify right side
    578,670.79x = 323,840,543,210.10
  5. Step 5: Solve for x
    x = 323,840,543,210.10/578,670.79
  6. Step 6: Final answer
    x = 559,628.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.