Home / 1,318,905.91-1,820,188.02-738,187.21

Finding the Fourth Proportional to 1,318,905.91, 1,820,188.02 and 738,187.21

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Solution

The fourth proportional to 1,318,905.91, 1,820,188.02 and 738,187.21 is: 1,018,753.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,905.91 : 1,820,188.02 = 738,187.21 : x
  2. Step 2: Convert to fraction form
    1,318,905.91/1,820,188.02 = 738,187.21/x
  3. Step 3: Cross multiply
    1,318,905.91x = 1,820,188.02 × 738,187.21
  4. Step 4: Simplify right side
    1,318,905.91x = 1,343,639,516,159.22
  5. Step 5: Solve for x
    x = 1,343,639,516,159.22/1,318,905.91
  6. Step 6: Final answer
    x = 1,018,753.12

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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.