Home / 919,130.30-1,379,818.65-520,048.70

Finding the Fourth Proportional to 919,130.30, 1,379,818.65 and 520,048.70

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Solution

The fourth proportional to 919,130.30, 1,379,818.65 and 520,048.70 is: 780,708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,130.30 : 1,379,818.65 = 520,048.70 : x
  2. Step 2: Convert to fraction form
    919,130.30/1,379,818.65 = 520,048.70/x
  3. Step 3: Cross multiply
    919,130.30x = 1,379,818.65 × 520,048.70
  4. Step 4: Simplify right side
    919,130.30x = 717,572,895,168.26
  5. Step 5: Solve for x
    x = 717,572,895,168.26/919,130.30
  6. Step 6: Final answer
    x = 780,708.56

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Double scale
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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.