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Finding the Fourth Proportional to 1,178,603.60, 1,766,868.60 and 705,477.20

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Solution

The fourth proportional to 1,178,603.60, 1,766,868.60 and 705,477.20 is: 1,057,595.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,603.60 : 1,766,868.60 = 705,477.20 : x
  2. Step 2: Convert to fraction form
    1,178,603.60/1,766,868.60 = 705,477.20/x
  3. Step 3: Cross multiply
    1,178,603.60x = 1,766,868.60 × 705,477.20
  4. Step 4: Simplify right side
    1,178,603.60x = 1,246,485,512,695.92
  5. Step 5: Solve for x
    x = 1,246,485,512,695.92/1,178,603.60
  6. Step 6: Final answer
    x = 1,057,595.20

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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.