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Finding the Fourth Proportional to 528,307.41, 728,516.23 and 452,078.82

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Solution

The fourth proportional to 528,307.41, 728,516.23 and 452,078.82 is: 623,399.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,307.41 : 728,516.23 = 452,078.82 : x
  2. Step 2: Convert to fraction form
    528,307.41/728,516.23 = 452,078.82/x
  3. Step 3: Cross multiply
    528,307.41x = 728,516.23 × 452,078.82
  4. Step 4: Simplify right side
    528,307.41x = 329,346,756,479.05
  5. Step 5: Solve for x
    x = 329,346,756,479.05/528,307.41
  6. Step 6: Final answer
    x = 623,399.84

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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.