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Finding the Fourth Proportional to 563,842.96, 778,113.96 and 309,178.96

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Solution

The fourth proportional to 563,842.96, 778,113.96 and 309,178.96 is: 426,672.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,842.96 : 778,113.96 = 309,178.96 : x
  2. Step 2: Convert to fraction form
    563,842.96/778,113.96 = 309,178.96/x
  3. Step 3: Cross multiply
    563,842.96x = 778,113.96 × 309,178.96
  4. Step 4: Simplify right side
    563,842.96x = 240,576,464,914.28
  5. Step 5: Solve for x
    x = 240,576,464,914.28/563,842.96
  6. Step 6: Final answer
    x = 426,672.82

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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.