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Finding the Fourth Proportional to 555,619.59, 766,758.71 and 300,970.78

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Solution

The fourth proportional to 555,619.59, 766,758.71 and 300,970.78 is: 415,341.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,619.59 : 766,758.71 = 300,970.78 : x
  2. Step 2: Convert to fraction form
    555,619.59/766,758.71 = 300,970.78/x
  3. Step 3: Cross multiply
    555,619.59x = 766,758.71 × 300,970.78
  4. Step 4: Simplify right side
    555,619.59x = 230,771,963,186.70
  5. Step 5: Solve for x
    x = 230,771,963,186.70/555,619.59
  6. Step 6: Final answer
    x = 415,341.66

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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.