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Finding the Fourth Proportional to 623,699.28, 860,926.32 and 369,049.92

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Solution

The fourth proportional to 623,699.28, 860,926.32 and 369,049.92 is: 509,419.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,699.28 : 860,926.32 = 369,049.92 : x
  2. Step 2: Convert to fraction form
    623,699.28/860,926.32 = 369,049.92/x
  3. Step 3: Cross multiply
    623,699.28x = 860,926.32 × 369,049.92
  4. Step 4: Simplify right side
    623,699.28x = 317,724,789,521.89
  5. Step 5: Solve for x
    x = 317,724,789,521.89/623,699.28
  6. Step 6: Final answer
    x = 509,419.84

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1.5x scale

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.