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Finding the Fourth Proportional to 637,987.40, 956,106.30 and 519,889.40

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Solution

The fourth proportional to 637,987.40, 956,106.30 and 519,889.40 is: 779,121.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,987.40 : 956,106.30 = 519,889.40 : x
  2. Step 2: Convert to fraction form
    637,987.40/956,106.30 = 519,889.40/x
  3. Step 3: Cross multiply
    637,987.40x = 956,106.30 × 519,889.40
  4. Step 4: Simplify right side
    637,987.40x = 497,069,530,643.22
  5. Step 5: Solve for x
    x = 497,069,530,643.22/637,987.40
  6. Step 6: Final answer
    x = 779,121.23

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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.