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Finding the Fourth Proportional to 656,098.79, 905,416.38 and 369,618.80

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Solution

The fourth proportional to 656,098.79, 905,416.38 and 369,618.80 is: 510,073.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,098.79 : 905,416.38 = 369,618.80 : x
  2. Step 2: Convert to fraction form
    656,098.79/905,416.38 = 369,618.80/x
  3. Step 3: Cross multiply
    656,098.79x = 905,416.38 × 369,618.80
  4. Step 4: Simplify right side
    656,098.79x = 334,658,911,348.86
  5. Step 5: Solve for x
    x = 334,658,911,348.86/656,098.79
  6. Step 6: Final answer
    x = 510,073.97

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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.