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Finding the Fourth Proportional to 528,089.30, 792,133.95 and 509,426.90

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Solution

The fourth proportional to 528,089.30, 792,133.95 and 509,426.90 is: 764,140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,089.30 : 792,133.95 = 509,426.90 : x
  2. Step 2: Convert to fraction form
    528,089.30/792,133.95 = 509,426.90/x
  3. Step 3: Cross multiply
    528,089.30x = 792,133.95 × 509,426.90
  4. Step 4: Simplify right side
    528,089.30x = 403,534,342,533.26
  5. Step 5: Solve for x
    x = 403,534,342,533.26/528,089.30
  6. Step 6: Final answer
    x = 764,140.35

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Double scale
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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.