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Finding the Fourth Proportional to 1,310,582.40, 1,966,748.40 and 741,962.40

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Solution

The fourth proportional to 1,310,582.40, 1,966,748.40 and 741,962.40 is: 1,113,438.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,582.40 : 1,966,748.40 = 741,962.40 : x
  2. Step 2: Convert to fraction form
    1,310,582.40/1,966,748.40 = 741,962.40/x
  3. Step 3: Cross multiply
    1,310,582.40x = 1,966,748.40 × 741,962.40
  4. Step 4: Simplify right side
    1,310,582.40x = 1,459,253,363,060.16
  5. Step 5: Solve for x
    x = 1,459,253,363,060.16/1,310,582.40
  6. Step 6: Final answer
    x = 1,113,438.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.