Home / 1,178,145.40-1,768,139.70-547,137.40

Finding the Fourth Proportional to 1,178,145.40, 1,768,139.70 and 547,137.40

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Solution

The fourth proportional to 1,178,145.40, 1,768,139.70 and 547,137.40 is: 821,134.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,145.40 : 1,768,139.70 = 547,137.40 : x
  2. Step 2: Convert to fraction form
    1,178,145.40/1,768,139.70 = 547,137.40/x
  3. Step 3: Cross multiply
    1,178,145.40x = 1,768,139.70 × 547,137.40
  4. Step 4: Simplify right side
    1,178,145.40x = 967,415,358,294.78
  5. Step 5: Solve for x
    x = 967,415,358,294.78/1,178,145.40
  6. Step 6: Final answer
    x = 821,134.10

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1.5x scale

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.