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Finding the Fourth Proportional to 528,045.40, 741,129.80 and 528,045.40

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Solution

The fourth proportional to 528,045.40, 741,129.80 and 528,045.40 is: 741,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,045.40 : 741,129.80 = 528,045.40 : x
  2. Step 2: Convert to fraction form
    528,045.40/741,129.80 = 528,045.40/x
  3. Step 3: Cross multiply
    528,045.40x = 741,129.80 × 528,045.40
  4. Step 4: Simplify right side
    528,045.40x = 391,350,181,692.92
  5. Step 5: Solve for x
    x = 391,350,181,692.92/528,045.40
  6. Step 6: Final answer
    x = 741,129.80

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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.