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Finding the Fourth Proportional to 698,775.38, 964,313.29 and 396,985.94

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Solution

The fourth proportional to 698,775.38, 964,313.29 and 396,985.94 is: 547,842.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,775.38 : 964,313.29 = 396,985.94 : x
  2. Step 2: Convert to fraction form
    698,775.38/964,313.29 = 396,985.94/x
  3. Step 3: Cross multiply
    698,775.38x = 964,313.29 × 396,985.94
  4. Step 4: Simplify right side
    698,775.38x = 382,818,817,885.14
  5. Step 5: Solve for x
    x = 382,818,817,885.14/698,775.38
  6. Step 6: Final answer
    x = 547,842.45

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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.