Home / 528,815.40-792,056.70-318,085.80

Finding the Fourth Proportional to 528,815.40, 792,056.70 and 318,085.80

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Solution

The fourth proportional to 528,815.40, 792,056.70 and 318,085.80 is: 476,427.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,815.40 : 792,056.70 = 318,085.80 : x
  2. Step 2: Convert to fraction form
    528,815.40/792,056.70 = 318,085.80/x
  3. Step 3: Cross multiply
    528,815.40x = 792,056.70 × 318,085.80
  4. Step 4: Simplify right side
    528,815.40x = 251,941,989,064.86
  5. Step 5: Solve for x
    x = 251,941,989,064.86/528,815.40
  6. Step 6: Final answer
    x = 476,427.10

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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.