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Finding the Fourth Proportional to 710,040.40, 1,064,671.80 and 288,840.40

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Solution

The fourth proportional to 710,040.40, 1,064,671.80 and 288,840.40 is: 433,102.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,040.40 : 1,064,671.80 = 288,840.40 : x
  2. Step 2: Convert to fraction form
    710,040.40/1,064,671.80 = 288,840.40/x
  3. Step 3: Cross multiply
    710,040.40x = 1,064,671.80 × 288,840.40
  4. Step 4: Simplify right side
    710,040.40x = 307,520,228,580.72
  5. Step 5: Solve for x
    x = 307,520,228,580.72/710,040.40
  6. Step 6: Final answer
    x = 433,102.44

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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.