Home / 567,140.16-782,688.36-312,491.28

Finding the Fourth Proportional to 567,140.16, 782,688.36 and 312,491.28

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Solution

The fourth proportional to 567,140.16, 782,688.36 and 312,491.28 is: 431,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,140.16 : 782,688.36 = 312,491.28 : x
  2. Step 2: Convert to fraction form
    567,140.16/782,688.36 = 312,491.28/x
  3. Step 3: Cross multiply
    567,140.16x = 782,688.36 × 312,491.28
  4. Step 4: Simplify right side
    567,140.16x = 244,583,287,457.50
  5. Step 5: Solve for x
    x = 244,583,287,457.50/567,140.16
  6. Step 6: Final answer
    x = 431,257.22

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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.