Home / 809,805.78-1,117,531.98-470,295.90

Finding the Fourth Proportional to 809,805.78, 1,117,531.98 and 470,295.90

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Solution

The fourth proportional to 809,805.78, 1,117,531.98 and 470,295.90 is: 649,008.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,805.78 : 1,117,531.98 = 470,295.90 : x
  2. Step 2: Convert to fraction form
    809,805.78/1,117,531.98 = 470,295.90/x
  3. Step 3: Cross multiply
    809,805.78x = 1,117,531.98 × 470,295.90
  4. Step 4: Simplify right side
    809,805.78x = 525,570,708,312.88
  5. Step 5: Solve for x
    x = 525,570,708,312.88/809,805.78
  6. Step 6: Final answer
    x = 649,008.34

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1.5x scale

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.