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Finding the Fourth Proportional to 528,009.40, 741,079.40 and 528,009.40

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Solution

The fourth proportional to 528,009.40, 741,079.40 and 528,009.40 is: 741,079.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,009.40 : 741,079.40 = 528,009.40 : x
  2. Step 2: Convert to fraction form
    528,009.40/741,079.40 = 528,009.40/x
  3. Step 3: Cross multiply
    528,009.40x = 741,079.40 × 528,009.40
  4. Step 4: Simplify right side
    528,009.40x = 391,296,889,346.36
  5. Step 5: Solve for x
    x = 391,296,889,346.36/528,009.40
  6. Step 6: Final answer
    x = 741,079.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.