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Finding the Fourth Proportional to 448,368.90, 672,553.35 and 390,048.90

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Solution

The fourth proportional to 448,368.90, 672,553.35 and 390,048.90 is: 585,073.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,368.90 : 672,553.35 = 390,048.90 : x
  2. Step 2: Convert to fraction form
    448,368.90/672,553.35 = 390,048.90/x
  3. Step 3: Cross multiply
    448,368.90x = 672,553.35 × 390,048.90
  4. Step 4: Simplify right side
    448,368.90x = 262,328,694,358.82
  5. Step 5: Solve for x
    x = 262,328,694,358.82/448,368.90
  6. Step 6: Final answer
    x = 585,073.35

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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.