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Finding the Fourth Proportional to 604,434.40, 905,614.80 and 288,210.40

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Solution

The fourth proportional to 604,434.40, 905,614.80 and 288,210.40 is: 431,821.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,434.40 : 905,614.80 = 288,210.40 : x
  2. Step 2: Convert to fraction form
    604,434.40/905,614.80 = 288,210.40/x
  3. Step 3: Cross multiply
    604,434.40x = 905,614.80 × 288,210.40
  4. Step 4: Simplify right side
    604,434.40x = 261,007,603,753.92
  5. Step 5: Solve for x
    x = 261,007,603,753.92/604,434.40
  6. Step 6: Final answer
    x = 431,821.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.