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Finding the Fourth Proportional to 476,781.54, 657,666.68 and 283,057.76

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Solution

The fourth proportional to 476,781.54, 657,666.68 and 283,057.76 is: 390,446.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,781.54 : 657,666.68 = 283,057.76 : x
  2. Step 2: Convert to fraction form
    476,781.54/657,666.68 = 283,057.76/x
  3. Step 3: Cross multiply
    476,781.54x = 657,666.68 × 283,057.76
  4. Step 4: Simplify right side
    476,781.54x = 186,157,655,852.15
  5. Step 5: Solve for x
    x = 186,157,655,852.15/476,781.54
  6. Step 6: Final answer
    x = 390,446.45

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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.