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Finding the Fourth Proportional to 528,608,803.60, 792,913,205.40 and 392,559,907.60

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Solution

The fourth proportional to 528,608,803.60, 792,913,205.40 and 392,559,907.60 is: 588,839,861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,608,803.60 : 792,913,205.40 = 392,559,907.60 : x
  2. Step 2: Convert to fraction form
    528,608,803.60/792,913,205.40 = 392,559,907.60/x
  3. Step 3: Cross multiply
    528,608,803.60x = 792,913,205.40 × 392,559,907.60
  4. Step 4: Simplify right side
    528,608,803.60x = 311,265,934,646,643,840
  5. Step 5: Solve for x
    x = 311,265,934,646,643,840/528,608,803.60
  6. Step 6: Final answer
    x = 588,839,861.40

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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.