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Finding the Fourth Proportional to 620,344.80, 929,350.80 and 319,802.40

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Solution

The fourth proportional to 620,344.80, 929,350.80 and 319,802.40 is: 479,102.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,344.80 : 929,350.80 = 319,802.40 : x
  2. Step 2: Convert to fraction form
    620,344.80/929,350.80 = 319,802.40/x
  3. Step 3: Cross multiply
    620,344.80x = 929,350.80 × 319,802.40
  4. Step 4: Simplify right side
    620,344.80x = 297,208,616,281.92
  5. Step 5: Solve for x
    x = 297,208,616,281.92/620,344.80
  6. Step 6: Final answer
    x = 479,102.29

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1.5x scale

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.