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Finding the Fourth Proportional to 470,000.88, 648,612.20 and 279,014.96

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Solution

The fourth proportional to 470,000.88, 648,612.20 and 279,014.96 is: 385,047.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,000.88 : 648,612.20 = 279,014.96 : x
  2. Step 2: Convert to fraction form
    470,000.88/648,612.20 = 279,014.96/x
  3. Step 3: Cross multiply
    470,000.88x = 648,612.20 × 279,014.96
  4. Step 4: Simplify right side
    470,000.88x = 180,972,507,038.51
  5. Step 5: Solve for x
    x = 180,972,507,038.51/470,000.88
  6. Step 6: Final answer
    x = 385,047.17

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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.