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Finding the Fourth Proportional to 476,763.74, 657,658.88 and 285,666.40

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Solution

The fourth proportional to 476,763.74, 657,658.88 and 285,666.40 is: 394,054.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,763.74 : 657,658.88 = 285,666.40 : x
  2. Step 2: Convert to fraction form
    476,763.74/657,658.88 = 285,666.40/x
  3. Step 3: Cross multiply
    476,763.74x = 657,658.88 × 285,666.40
  4. Step 4: Simplify right side
    476,763.74x = 187,871,044,677.63
  5. Step 5: Solve for x
    x = 187,871,044,677.63/476,763.74
  6. Step 6: Final answer
    x = 394,054.81

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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.