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Finding the Fourth Proportional to 634,590, 875,769.12 and 366,404.40

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Solution

The fourth proportional to 634,590, 875,769.12 and 366,404.40 is: 505,658.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,590 : 875,769.12 = 366,404.40 : x
  2. Step 2: Convert to fraction form
    634,590/875,769.12 = 366,404.40/x
  3. Step 3: Cross multiply
    634,590x = 875,769.12 × 366,404.40
  4. Step 4: Simplify right side
    634,590x = 320,885,658,952.13
  5. Step 5: Solve for x
    x = 320,885,658,952.13/634,590
  6. Step 6: Final answer
    x = 505,658.23

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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.