Home / 985,641.05-1,478,457.32-386,178.90

Finding the Fourth Proportional to 985,641.05, 1,478,457.32 and 386,178.90

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Solution

The fourth proportional to 985,641.05, 1,478,457.32 and 386,178.90 is: 579,266.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,641.05 : 1,478,457.32 = 386,178.90 : x
  2. Step 2: Convert to fraction form
    985,641.05/1,478,457.32 = 386,178.90/x
  3. Step 3: Cross multiply
    985,641.05x = 1,478,457.32 × 386,178.90
  4. Step 4: Simplify right side
    985,641.05x = 570,949,019,603.65
  5. Step 5: Solve for x
    x = 570,949,019,603.65/985,641.05
  6. Step 6: Final answer
    x = 579,266.68

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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.