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Finding the Fourth Proportional to 528,276.17, 728,212.23 and 323,948.21

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Solution

The fourth proportional to 528,276.17, 728,212.23 and 323,948.21 is: 446,552.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,276.17 : 728,212.23 = 323,948.21 : x
  2. Step 2: Convert to fraction form
    528,276.17/728,212.23 = 323,948.21/x
  3. Step 3: Cross multiply
    528,276.17x = 728,212.23 × 323,948.21
  4. Step 4: Simplify right side
    528,276.17x = 235,903,044,767.55
  5. Step 5: Solve for x
    x = 235,903,044,767.55/528,276.17
  6. Step 6: Final answer
    x = 446,552.50

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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.