Home / 858,813.40-1,288,220.10-438,909.40

Finding the Fourth Proportional to 858,813.40, 1,288,220.10 and 438,909.40

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Solution

The fourth proportional to 858,813.40, 1,288,220.10 and 438,909.40 is: 658,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,813.40 : 1,288,220.10 = 438,909.40 : x
  2. Step 2: Convert to fraction form
    858,813.40/1,288,220.10 = 438,909.40/x
  3. Step 3: Cross multiply
    858,813.40x = 1,288,220.10 × 438,909.40
  4. Step 4: Simplify right side
    858,813.40x = 565,411,911,158.94
  5. Step 5: Solve for x
    x = 565,411,911,158.94/858,813.40
  6. Step 6: Final answer
    x = 658,364.10

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