Home / 648,312.35-894,788.15-386,684.43

Finding the Fourth Proportional to 648,312.35, 894,788.15 and 386,684.43

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Solution

The fourth proportional to 648,312.35, 894,788.15 and 386,684.43 is: 533,694.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,312.35 : 894,788.15 = 386,684.43 : x
  2. Step 2: Convert to fraction form
    648,312.35/894,788.15 = 386,684.43/x
  3. Step 3: Cross multiply
    648,312.35x = 894,788.15 × 386,684.43
  4. Step 4: Simplify right side
    648,312.35x = 346,000,643,820.08
  5. Step 5: Solve for x
    x = 346,000,643,820.08/648,312.35
  6. Step 6: Final answer
    x = 533,694.36

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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.