Home / 784,755.10-1,178,007.45-430,461.10

Finding the Fourth Proportional to 784,755.10, 1,178,007.45 and 430,461.10

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Solution

The fourth proportional to 784,755.10, 1,178,007.45 and 430,461.10 is: 646,171.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,755.10 : 1,178,007.45 = 430,461.10 : x
  2. Step 2: Convert to fraction form
    784,755.10/1,178,007.45 = 430,461.10/x
  3. Step 3: Cross multiply
    784,755.10x = 1,178,007.45 × 430,461.10
  4. Step 4: Simplify right side
    784,755.10x = 507,086,382,735.20
  5. Step 5: Solve for x
    x = 507,086,382,735.20/784,755.10
  6. Step 6: Final answer
    x = 646,171.50

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Double scale
Find fourth proportional to 784,756.10, 1,178,008.95 and 430,462.10
Similar ratio
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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.