Home / 641,586.24-884,783.28-478,602.72

Finding the Fourth Proportional to 641,586.24, 884,783.28 and 478,602.72

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Solution

The fourth proportional to 641,586.24, 884,783.28 and 478,602.72 is: 660,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,586.24 : 884,783.28 = 478,602.72 : x
  2. Step 2: Convert to fraction form
    641,586.24/884,783.28 = 478,602.72/x
  3. Step 3: Cross multiply
    641,586.24x = 884,783.28 × 478,602.72
  4. Step 4: Simplify right side
    641,586.24x = 423,459,684,418.52
  5. Step 5: Solve for x
    x = 423,459,684,418.52/641,586.24
  6. Step 6: Final answer
    x = 660,019.90

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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.