Home / 528,895.70-729,876.94-287,178.74

Finding the Fourth Proportional to 528,895.70, 729,876.94 and 287,178.74

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Solution

The fourth proportional to 528,895.70, 729,876.94 and 287,178.74 is: 396,307.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,895.70 : 729,876.94 = 287,178.74 : x
  2. Step 2: Convert to fraction form
    528,895.70/729,876.94 = 287,178.74/x
  3. Step 3: Cross multiply
    528,895.70x = 729,876.94 × 287,178.74
  4. Step 4: Simplify right side
    528,895.70x = 209,605,139,984.26
  5. Step 5: Solve for x
    x = 209,605,139,984.26/528,895.70
  6. Step 6: Final answer
    x = 396,307.14

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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.