Home / 528,623,405.40-792,179,280.90-389,362,243.80

Finding the Fourth Proportional to 528,623,405.40, 792,179,280.90 and 389,362,243.80

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Solution

The fourth proportional to 528,623,405.40, 792,179,280.90 and 389,362,243.80 is: 583,486,654.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,623,405.40 : 792,179,280.90 = 389,362,243.80 : x
  2. Step 2: Convert to fraction form
    528,623,405.40/792,179,280.90 = 389,362,243.80/x
  3. Step 3: Cross multiply
    528,623,405.40x = 792,179,280.90 × 389,362,243.80
  4. Step 4: Simplify right side
    528,623,405.40x = 308,444,702,303,094,464
  5. Step 5: Solve for x
    x = 308,444,702,303,094,464/528,623,405.40
  6. Step 6: Final answer
    x = 583,486,654.49

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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.