Home / 809,740.12-1,117,356.54-470,142.04

Finding the Fourth Proportional to 809,740.12, 1,117,356.54 and 470,142.04

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Solution

The fourth proportional to 809,740.12, 1,117,356.54 and 470,142.04 is: 648,746.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,740.12 : 1,117,356.54 = 470,142.04 : x
  2. Step 2: Convert to fraction form
    809,740.12/1,117,356.54 = 470,142.04/x
  3. Step 3: Cross multiply
    809,740.12x = 1,117,356.54 × 470,142.04
  4. Step 4: Simplify right side
    809,740.12x = 525,316,283,122.94
  5. Step 5: Solve for x
    x = 525,316,283,122.94/809,740.12
  6. Step 6: Final answer
    x = 648,746.76

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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.