Home / 749,290.10-1,034,115.03-491,384.07

Finding the Fourth Proportional to 749,290.10, 1,034,115.03 and 491,384.07

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Solution

The fourth proportional to 749,290.10, 1,034,115.03 and 491,384.07 is: 678,172.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,290.10 : 1,034,115.03 = 491,384.07 : x
  2. Step 2: Convert to fraction form
    749,290.10/1,034,115.03 = 491,384.07/x
  3. Step 3: Cross multiply
    749,290.10x = 1,034,115.03 × 491,384.07
  4. Step 4: Simplify right side
    749,290.10x = 508,147,652,289.57
  5. Step 5: Solve for x
    x = 508,147,652,289.57/749,290.10
  6. Step 6: Final answer
    x = 678,172.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.