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Finding the Fourth Proportional to 528,003.60, 792,005.40 and 521,005.20

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Solution

The fourth proportional to 528,003.60, 792,005.40 and 521,005.20 is: 781,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,003.60 : 792,005.40 = 521,005.20 : x
  2. Step 2: Convert to fraction form
    528,003.60/792,005.40 = 521,005.20/x
  3. Step 3: Cross multiply
    528,003.60x = 792,005.40 × 521,005.20
  4. Step 4: Simplify right side
    528,003.60x = 412,638,931,828.08
  5. Step 5: Solve for x
    x = 412,638,931,828.08/528,003.60
  6. Step 6: Final answer
    x = 781,507.80

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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.