Home / 863,780.23-1,293,935.65-430,191.53

Finding the Fourth Proportional to 863,780.23, 1,293,935.65 and 430,191.53

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Solution

The fourth proportional to 863,780.23, 1,293,935.65 and 430,191.53 is: 644,423.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,780.23 : 1,293,935.65 = 430,191.53 : x
  2. Step 2: Convert to fraction form
    863,780.23/1,293,935.65 = 430,191.53/x
  3. Step 3: Cross multiply
    863,780.23x = 1,293,935.65 × 430,191.53
  4. Step 4: Simplify right side
    863,780.23x = 556,640,156,995.05
  5. Step 5: Solve for x
    x = 556,640,156,995.05/863,780.23
  6. Step 6: Final answer
    x = 644,423.36

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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.