Home / 915,014.55-1,262,720.06-507,177.66

Finding the Fourth Proportional to 915,014.55, 1,262,720.06 and 507,177.66

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Solution

The fourth proportional to 915,014.55, 1,262,720.06 and 507,177.66 is: 699,905.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,014.55 : 1,262,720.06 = 507,177.66 : x
  2. Step 2: Convert to fraction form
    915,014.55/1,262,720.06 = 507,177.66/x
  3. Step 3: Cross multiply
    915,014.55x = 1,262,720.06 × 507,177.66
  4. Step 4: Simplify right side
    915,014.55x = 640,423,405,265.86
  5. Step 5: Solve for x
    x = 640,423,405,265.86/915,014.55
  6. Step 6: Final answer
    x = 699,905.16

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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.