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Finding the Fourth Proportional to 648,140.64, 894,300.55 and 372,445.24

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Solution

The fourth proportional to 648,140.64, 894,300.55 and 372,445.24 is: 513,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,140.64 : 894,300.55 = 372,445.24 : x
  2. Step 2: Convert to fraction form
    648,140.64/894,300.55 = 372,445.24/x
  3. Step 3: Cross multiply
    648,140.64x = 894,300.55 × 372,445.24
  4. Step 4: Simplify right side
    648,140.64x = 333,077,981,486.83
  5. Step 5: Solve for x
    x = 333,077,981,486.83/648,140.64
  6. Step 6: Final answer
    x = 513,897.70

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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.