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Finding the Fourth Proportional to 551,920.50, 761,651.01 and 313,456.50

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Solution

The fourth proportional to 551,920.50, 761,651.01 and 313,456.50 is: 432,570.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,920.50 : 761,651.01 = 313,456.50 : x
  2. Step 2: Convert to fraction form
    551,920.50/761,651.01 = 313,456.50/x
  3. Step 3: Cross multiply
    551,920.50x = 761,651.01 × 313,456.50
  4. Step 4: Simplify right side
    551,920.50x = 238,744,459,816.07
  5. Step 5: Solve for x
    x = 238,744,459,816.07/551,920.50
  6. Step 6: Final answer
    x = 432,570.38

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1.5x scale

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.