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Finding the Fourth Proportional to 545,308.55, 752,411.73 and 315,783.24

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Solution

The fourth proportional to 545,308.55, 752,411.73 and 315,783.24 is: 435,714.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,308.55 : 752,411.73 = 315,783.24 : x
  2. Step 2: Convert to fraction form
    545,308.55/752,411.73 = 315,783.24/x
  3. Step 3: Cross multiply
    545,308.55x = 752,411.73 × 315,783.24
  4. Step 4: Simplify right side
    545,308.55x = 237,599,013,913.41
  5. Step 5: Solve for x
    x = 237,599,013,913.41/545,308.55
  6. Step 6: Final answer
    x = 435,714.81

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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.