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Finding the Fourth Proportional to 545,752, 753,188.70 and 319,397.68

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Solution

The fourth proportional to 545,752, 753,188.70 and 319,397.68 is: 440,798.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,752 : 753,188.70 = 319,397.68 : x
  2. Step 2: Convert to fraction form
    545,752/753,188.70 = 319,397.68/x
  3. Step 3: Cross multiply
    545,752x = 753,188.70 × 319,397.68
  4. Step 4: Simplify right side
    545,752x = 240,566,723,382.22
  5. Step 5: Solve for x
    x = 240,566,723,382.22/545,752
  6. Step 6: Final answer
    x = 440,798.61

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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.