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Finding the Fourth Proportional to 656,376.40, 984,564.60 and 432,038.80

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Solution

The fourth proportional to 656,376.40, 984,564.60 and 432,038.80 is: 648,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,376.40 : 984,564.60 = 432,038.80 : x
  2. Step 2: Convert to fraction form
    656,376.40/984,564.60 = 432,038.80/x
  3. Step 3: Cross multiply
    656,376.40x = 984,564.60 × 432,038.80
  4. Step 4: Simplify right side
    656,376.40x = 425,370,108,306.48
  5. Step 5: Solve for x
    x = 425,370,108,306.48/656,376.40
  6. Step 6: Final answer
    x = 648,058.20

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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.