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Finding the Fourth Proportional to 528,615.64, 728,938.22 and 313,714.19

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Solution

The fourth proportional to 528,615.64, 728,938.22 and 313,714.19 is: 432,598.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,615.64 : 728,938.22 = 313,714.19 : x
  2. Step 2: Convert to fraction form
    528,615.64/728,938.22 = 313,714.19/x
  3. Step 3: Cross multiply
    528,615.64x = 728,938.22 × 313,714.19
  4. Step 4: Simplify right side
    528,615.64x = 228,678,263,247.34
  5. Step 5: Solve for x
    x = 228,678,263,247.34/528,615.64
  6. Step 6: Final answer
    x = 432,598.37

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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.