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Finding the Fourth Proportional to 470,291.64, 648,984.06 and 279,300.12

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Solution

The fourth proportional to 470,291.64, 648,984.06 and 279,300.12 is: 385,423.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,291.64 : 648,984.06 = 279,300.12 : x
  2. Step 2: Convert to fraction form
    470,291.64/648,984.06 = 279,300.12/x
  3. Step 3: Cross multiply
    470,291.64x = 648,984.06 × 279,300.12
  4. Step 4: Simplify right side
    470,291.64x = 181,261,325,836.09
  5. Step 5: Solve for x
    x = 181,261,325,836.09/470,291.64
  6. Step 6: Final answer
    x = 385,423.24

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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.