Home / 1,008,682.04-1,391,440.14-645,715.40

Finding the Fourth Proportional to 1,008,682.04, 1,391,440.14 and 645,715.40

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Solution

The fourth proportional to 1,008,682.04, 1,391,440.14 and 645,715.40 is: 890,740.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,682.04 : 1,391,440.14 = 645,715.40 : x
  2. Step 2: Convert to fraction form
    1,008,682.04/1,391,440.14 = 645,715.40/x
  3. Step 3: Cross multiply
    1,008,682.04x = 1,391,440.14 × 645,715.40
  4. Step 4: Simplify right side
    1,008,682.04x = 898,474,326,576.16
  5. Step 5: Solve for x
    x = 898,474,326,576.16/1,008,682.04
  6. Step 6: Final answer
    x = 890,740.88

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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.