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Finding the Fourth Proportional to 693,078.80, 956,426.58 and 402,714.61

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Solution

The fourth proportional to 693,078.80, 956,426.58 and 402,714.61 is: 555,733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,078.80 : 956,426.58 = 402,714.61 : x
  2. Step 2: Convert to fraction form
    693,078.80/956,426.58 = 402,714.61/x
  3. Step 3: Cross multiply
    693,078.80x = 956,426.58 × 402,714.61
  4. Step 4: Simplify right side
    693,078.80x = 385,166,954,767.27
  5. Step 5: Solve for x
    x = 385,166,954,767.27/693,078.80
  6. Step 6: Final answer
    x = 555,733.28

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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.