Home / 987,142.35-1,479,767.67-417,740.25

Finding the Fourth Proportional to 987,142.35, 1,479,767.67 and 417,740.25

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Solution

The fourth proportional to 987,142.35, 1,479,767.67 and 417,740.25 is: 626,210.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,142.35 : 1,479,767.67 = 417,740.25 : x
  2. Step 2: Convert to fraction form
    987,142.35/1,479,767.67 = 417,740.25/x
  3. Step 3: Cross multiply
    987,142.35x = 1,479,767.67 × 417,740.25
  4. Step 4: Simplify right side
    987,142.35x = 618,158,516,407.72
  5. Step 5: Solve for x
    x = 618,158,516,407.72/987,142.35
  6. Step 6: Final answer
    x = 626,210.11

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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.