Home / 528,631.76-729,512.51-286,914.30

Finding the Fourth Proportional to 528,631.76, 729,512.51 and 286,914.30

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Solution

The fourth proportional to 528,631.76, 729,512.51 and 286,914.30 is: 395,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,631.76 : 729,512.51 = 286,914.30 : x
  2. Step 2: Convert to fraction form
    528,631.76/729,512.51 = 286,914.30/x
  3. Step 3: Cross multiply
    528,631.76x = 729,512.51 × 286,914.30
  4. Step 4: Simplify right side
    528,631.76x = 209,307,569,713.32
  5. Step 5: Solve for x
    x = 209,307,569,713.32/528,631.76
  6. Step 6: Final answer
    x = 395,942.10

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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.