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Finding the Fourth Proportional to 1,977,477.28, 2,966,215.91 and 912,204.16

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Solution

The fourth proportional to 1,977,477.28, 2,966,215.91 and 912,204.16 is: 1,368,306.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977,477.28 : 2,966,215.91 = 912,204.16 : x
  2. Step 2: Convert to fraction form
    1,977,477.28/2,966,215.91 = 912,204.16/x
  3. Step 3: Cross multiply
    1,977,477.28x = 2,966,215.91 × 912,204.16
  4. Step 4: Simplify right side
    1,977,477.28x = 2,705,794,492,560.19
  5. Step 5: Solve for x
    x = 2,705,794,492,560.19/1,977,477.28
  6. Step 6: Final answer
    x = 1,368,306.24

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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.