Home / 648,004.20-972,006.30-459,047.40

Finding the Fourth Proportional to 648,004.20, 972,006.30 and 459,047.40

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Solution

The fourth proportional to 648,004.20, 972,006.30 and 459,047.40 is: 688,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,004.20 : 972,006.30 = 459,047.40 : x
  2. Step 2: Convert to fraction form
    648,004.20/972,006.30 = 459,047.40/x
  3. Step 3: Cross multiply
    648,004.20x = 972,006.30 × 459,047.40
  4. Step 4: Simplify right side
    648,004.20x = 446,196,964,798.62
  5. Step 5: Solve for x
    x = 446,196,964,798.62/648,004.20
  6. Step 6: Final answer
    x = 688,571.10

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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.