Home / 470,210.39-649,089.00-317,455.51

Finding the Fourth Proportional to 470,210.39, 649,089.00 and 317,455.51

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Solution

The fourth proportional to 470,210.39, 649,089.00 and 317,455.51 is: 438,222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,210.39 : 649,089.00 = 317,455.51 : x
  2. Step 2: Convert to fraction form
    470,210.39/649,089.00 = 317,455.51/x
  3. Step 3: Cross multiply
    470,210.39x = 649,089.00 × 317,455.51
  4. Step 4: Simplify right side
    470,210.39x = 206,056,876,717.21
  5. Step 5: Solve for x
    x = 206,056,876,717.21/470,210.39
  6. Step 6: Final answer
    x = 438,222.72

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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.