Home / 528,438.72-792,685.77-402,276.76

Finding the Fourth Proportional to 528,438.72, 792,685.77 and 402,276.76

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Solution

The fourth proportional to 528,438.72, 792,685.77 and 402,276.76 is: 603,436.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,438.72 : 792,685.77 = 402,276.76 : x
  2. Step 2: Convert to fraction form
    528,438.72/792,685.77 = 402,276.76/x
  3. Step 3: Cross multiply
    528,438.72x = 792,685.77 × 402,276.76
  4. Step 4: Simplify right side
    528,438.72x = 318,879,063,253.71
  5. Step 5: Solve for x
    x = 318,879,063,253.71/528,438.72
  6. Step 6: Final answer
    x = 603,436.22

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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.