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Finding the Fourth Proportional to 1,373,502.86, 1,895,202.95 and 915,301.47

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Solution

The fourth proportional to 1,373,502.86, 1,895,202.95 and 915,301.47 is: 1,262,962.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373,502.86 : 1,895,202.95 = 915,301.47 : x
  2. Step 2: Convert to fraction form
    1,373,502.86/1,895,202.95 = 915,301.47/x
  3. Step 3: Cross multiply
    1,373,502.86x = 1,895,202.95 × 915,301.47
  4. Step 4: Simplify right side
    1,373,502.86x = 1,734,682,041,506.83
  5. Step 5: Solve for x
    x = 1,734,682,041,506.83/1,373,502.86
  6. Step 6: Final answer
    x = 1,262,962.09

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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.