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Finding the Fourth Proportional to 571,223.32, 855,237.54 and 430,541.08

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Solution

The fourth proportional to 571,223.32, 855,237.54 and 430,541.08 is: 644,607.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,223.32 : 855,237.54 = 430,541.08 : x
  2. Step 2: Convert to fraction form
    571,223.32/855,237.54 = 430,541.08/x
  3. Step 3: Cross multiply
    571,223.32x = 855,237.54 × 430,541.08
  4. Step 4: Simplify right side
    571,223.32x = 368,214,894,128.14
  5. Step 5: Solve for x
    x = 368,214,894,128.14/571,223.32
  6. Step 6: Final answer
    x = 644,607.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.