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Finding the Fourth Proportional to 525,908.40, 788,279.40 and 289,420.80

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Solution

The fourth proportional to 525,908.40, 788,279.40 and 289,420.80 is: 433,810.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,908.40 : 788,279.40 = 289,420.80 : x
  2. Step 2: Convert to fraction form
    525,908.40/788,279.40 = 289,420.80/x
  3. Step 3: Cross multiply
    525,908.40x = 788,279.40 × 289,420.80
  4. Step 4: Simplify right side
    525,908.40x = 228,144,454,571.52
  5. Step 5: Solve for x
    x = 228,144,454,571.52/525,908.40
  6. Step 6: Final answer
    x = 433,810.25

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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.