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Finding the Fourth Proportional to 528,087.20, 792,130.80 and 470,026.40

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Solution

The fourth proportional to 528,087.20, 792,130.80 and 470,026.40 is: 705,039.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,087.20 : 792,130.80 = 470,026.40 : x
  2. Step 2: Convert to fraction form
    528,087.20/792,130.80 = 470,026.40/x
  3. Step 3: Cross multiply
    528,087.20x = 792,130.80 × 470,026.40
  4. Step 4: Simplify right side
    528,087.20x = 372,322,388,253.12
  5. Step 5: Solve for x
    x = 372,322,388,253.12/528,087.20
  6. Step 6: Final answer
    x = 705,039.60

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Similar ratio
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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.