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Finding the Fourth Proportional to 710,168.64, 1,064,040.48 and 390,588

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Solution

The fourth proportional to 710,168.64, 1,064,040.48 and 390,588 is: 585,215.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,168.64 : 1,064,040.48 = 390,588 : x
  2. Step 2: Convert to fraction form
    710,168.64/1,064,040.48 = 390,588/x
  3. Step 3: Cross multiply
    710,168.64x = 1,064,040.48 × 390,588
  4. Step 4: Simplify right side
    710,168.64x = 415,601,443,002.24
  5. Step 5: Solve for x
    x = 415,601,443,002.24/710,168.64
  6. Step 6: Final answer
    x = 585,215.14

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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.