Home / 858,569.28-1,287,852.84-326,089.32

Finding the Fourth Proportional to 858,569.28, 1,287,852.84 and 326,089.32

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Solution

The fourth proportional to 858,569.28, 1,287,852.84 and 326,089.32 is: 489,133.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,569.28 : 1,287,852.84 = 326,089.32 : x
  2. Step 2: Convert to fraction form
    858,569.28/1,287,852.84 = 326,089.32/x
  3. Step 3: Cross multiply
    858,569.28x = 1,287,852.84 × 326,089.32
  4. Step 4: Simplify right side
    858,569.28x = 419,955,056,855.67
  5. Step 5: Solve for x
    x = 419,955,056,855.67/858,569.28
  6. Step 6: Final answer
    x = 489,133.57

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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.