Home / 528,972.48-729,979.74-287,253.06

Finding the Fourth Proportional to 528,972.48, 729,979.74 and 287,253.06

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Solution

The fourth proportional to 528,972.48, 729,979.74 and 287,253.06 is: 396,407.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,972.48 : 729,979.74 = 287,253.06 : x
  2. Step 2: Convert to fraction form
    528,972.48/729,979.74 = 287,253.06/x
  3. Step 3: Cross multiply
    528,972.48x = 729,979.74 × 287,253.06
  4. Step 4: Simplify right side
    528,972.48x = 209,688,914,053.00
  5. Step 5: Solve for x
    x = 209,688,914,053.00/528,972.48
  6. Step 6: Final answer
    x = 396,407.98

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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.