Home / 679,991.28-1,019,053.80-430,226.16

Finding the Fourth Proportional to 679,991.28, 1,019,053.80 and 430,226.16

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Solution

The fourth proportional to 679,991.28, 1,019,053.80 and 430,226.16 is: 644,748.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,991.28 : 1,019,053.80 = 430,226.16 : x
  2. Step 2: Convert to fraction form
    679,991.28/1,019,053.80 = 430,226.16/x
  3. Step 3: Cross multiply
    679,991.28x = 1,019,053.80 × 430,226.16
  4. Step 4: Simplify right side
    679,991.28x = 438,423,603,207.41
  5. Step 5: Solve for x
    x = 438,423,603,207.41/679,991.28
  6. Step 6: Final answer
    x = 644,748.86

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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.