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Finding the Fourth Proportional to 556,561.89, 768,055.68 and 314,839.35

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Solution

The fourth proportional to 556,561.89, 768,055.68 and 314,839.35 is: 434,478.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,561.89 : 768,055.68 = 314,839.35 : x
  2. Step 2: Convert to fraction form
    556,561.89/768,055.68 = 314,839.35/x
  3. Step 3: Cross multiply
    556,561.89x = 768,055.68 × 314,839.35
  4. Step 4: Simplify right side
    556,561.89x = 241,814,151,055.01
  5. Step 5: Solve for x
    x = 241,814,151,055.01/556,561.89
  6. Step 6: Final answer
    x = 434,478.46

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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.