Home / 528,587.20-729,450.90-286,869.88

Finding the Fourth Proportional to 528,587.20, 729,450.90 and 286,869.88

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Solution

The fourth proportional to 528,587.20, 729,450.90 and 286,869.88 is: 395,880.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,587.20 : 729,450.90 = 286,869.88 : x
  2. Step 2: Convert to fraction form
    528,587.20/729,450.90 = 286,869.88/x
  3. Step 3: Cross multiply
    528,587.20x = 729,450.90 × 286,869.88
  4. Step 4: Simplify right side
    528,587.20x = 209,257,492,148.89
  5. Step 5: Solve for x
    x = 209,257,492,148.89/528,587.20
  6. Step 6: Final answer
    x = 395,880.74

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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.