Home / 528,973.48-729,981.12-287,254.06

Finding the Fourth Proportional to 528,973.48, 729,981.12 and 287,254.06

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Solution

The fourth proportional to 528,973.48, 729,981.12 and 287,254.06 is: 396,409.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,973.48 : 729,981.12 = 287,254.06 : x
  2. Step 2: Convert to fraction form
    528,973.48/729,981.12 = 287,254.06/x
  3. Step 3: Cross multiply
    528,973.48x = 729,981.12 × 287,254.06
  4. Step 4: Simplify right side
    528,973.48x = 209,690,040,443.35
  5. Step 5: Solve for x
    x = 209,690,040,443.35/528,973.48
  6. Step 6: Final answer
    x = 396,409.36

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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.