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Finding the Fourth Proportional to 710,144.64, 1,064,004.48 and 390,564

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Solution

The fourth proportional to 710,144.64, 1,064,004.48 and 390,564 is: 585,179.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,144.64 : 1,064,004.48 = 390,564 : x
  2. Step 2: Convert to fraction form
    710,144.64/1,064,004.48 = 390,564/x
  3. Step 3: Cross multiply
    710,144.64x = 1,064,004.48 × 390,564
  4. Step 4: Simplify right side
    710,144.64x = 415,561,845,726.72
  5. Step 5: Solve for x
    x = 415,561,845,726.72/710,144.64
  6. Step 6: Final answer
    x = 585,179.16

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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.