Home / 438,114.30-657,430.65-288,786.30

Finding the Fourth Proportional to 438,114.30, 657,430.65 and 288,786.30

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Solution

The fourth proportional to 438,114.30, 657,430.65 and 288,786.30 is: 433,350.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,114.30 : 657,430.65 = 288,786.30 : x
  2. Step 2: Convert to fraction form
    438,114.30/657,430.65 = 288,786.30/x
  3. Step 3: Cross multiply
    438,114.30x = 657,430.65 × 288,786.30
  4. Step 4: Simplify right side
    438,114.30x = 189,856,964,920.10
  5. Step 5: Solve for x
    x = 189,856,964,920.10/438,114.30
  6. Step 6: Final answer
    x = 433,350.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.