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Finding the Fourth Proportional to 476,482.80, 657,580.77 and 315,057.90

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Solution

The fourth proportional to 476,482.80, 657,580.77 and 315,057.90 is: 434,802.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,482.80 : 657,580.77 = 315,057.90 : x
  2. Step 2: Convert to fraction form
    476,482.80/657,580.77 = 315,057.90/x
  3. Step 3: Cross multiply
    476,482.80x = 657,580.77 × 315,057.90
  4. Step 4: Simplify right side
    476,482.80x = 207,176,016,476.58
  5. Step 5: Solve for x
    x = 207,176,016,476.58/476,482.80
  6. Step 6: Final answer
    x = 434,802.72

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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.