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Finding the Fourth Proportional to 528,159.26, 728,952.94 and 313,417.74

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Solution

The fourth proportional to 528,159.26, 728,952.94 and 313,417.74 is: 432,571.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,159.26 : 728,952.94 = 313,417.74 : x
  2. Step 2: Convert to fraction form
    528,159.26/728,952.94 = 313,417.74/x
  3. Step 3: Cross multiply
    528,159.26x = 728,952.94 × 313,417.74
  4. Step 4: Simplify right side
    528,159.26x = 228,466,783,021.16
  5. Step 5: Solve for x
    x = 228,466,783,021.16/528,159.26
  6. Step 6: Final answer
    x = 432,571.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.