Home / 642,277.06-885,309.33-435,478.48

Finding the Fourth Proportional to 642,277.06, 885,309.33 and 435,478.48

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Solution

The fourth proportional to 642,277.06, 885,309.33 and 435,478.48 is: 600,259.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,277.06 : 885,309.33 = 435,478.48 : x
  2. Step 2: Convert to fraction form
    642,277.06/885,309.33 = 435,478.48/x
  3. Step 3: Cross multiply
    642,277.06x = 885,309.33 × 435,478.48
  4. Step 4: Simplify right side
    642,277.06x = 385,533,160,777.99
  5. Step 5: Solve for x
    x = 385,533,160,777.99/642,277.06
  6. Step 6: Final answer
    x = 600,259.90

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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.