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Finding the Fourth Proportional to 693,221.94, 956,482.34 and 402,660.86

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Solution

The fourth proportional to 693,221.94, 956,482.34 and 402,660.86 is: 555,576.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,221.94 : 956,482.34 = 402,660.86 : x
  2. Step 2: Convert to fraction form
    693,221.94/956,482.34 = 402,660.86/x
  3. Step 3: Cross multiply
    693,221.94x = 956,482.34 × 402,660.86
  4. Step 4: Simplify right side
    693,221.94x = 385,137,994,803.50
  5. Step 5: Solve for x
    x = 385,137,994,803.50/693,221.94
  6. Step 6: Final answer
    x = 555,576.75

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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.