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Finding the Fourth Proportional to 543,210.19, 749,722.83 and 313,726.23

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Solution

The fourth proportional to 543,210.19, 749,722.83 and 313,726.23 is: 432,995.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,210.19 : 749,722.83 = 313,726.23 : x
  2. Step 2: Convert to fraction form
    543,210.19/749,722.83 = 313,726.23/x
  3. Step 3: Cross multiply
    543,210.19x = 749,722.83 × 313,726.23
  4. Step 4: Simplify right side
    543,210.19x = 235,207,717,000.83
  5. Step 5: Solve for x
    x = 235,207,717,000.83/543,210.19
  6. Step 6: Final answer
    x = 432,995.78

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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.