Home / 470,210.09-649,088.55-317,455.20

Finding the Fourth Proportional to 470,210.09, 649,088.55 and 317,455.20

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Solution

The fourth proportional to 470,210.09, 649,088.55 and 317,455.20 is: 438,222.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,210.09 : 649,088.55 = 317,455.20 : x
  2. Step 2: Convert to fraction form
    470,210.09/649,088.55 = 317,455.20/x
  3. Step 3: Cross multiply
    470,210.09x = 649,088.55 × 317,455.20
  4. Step 4: Simplify right side
    470,210.09x = 206,056,535,457.96
  5. Step 5: Solve for x
    x = 206,056,535,457.96/470,210.09
  6. Step 6: Final answer
    x = 438,222.28

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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.