Home / 771,110.10-1,156,071.87-391,719.06

Finding the Fourth Proportional to 771,110.10, 1,156,071.87 and 391,719.06

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Solution

The fourth proportional to 771,110.10, 1,156,071.87 and 391,719.06 is: 587,277.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,110.10 : 1,156,071.87 = 391,719.06 : x
  2. Step 2: Convert to fraction form
    771,110.10/1,156,071.87 = 391,719.06/x
  3. Step 3: Cross multiply
    771,110.10x = 1,156,071.87 × 391,719.06
  4. Step 4: Simplify right side
    771,110.10x = 452,855,386,208.84
  5. Step 5: Solve for x
    x = 452,855,386,208.84/771,110.10
  6. Step 6: Final answer
    x = 587,277.21

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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.