Home / 1,553,135.40-2,328,320.70-921,378.60

Finding the Fourth Proportional to 1,553,135.40, 2,328,320.70 and 921,378.60

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Solution

The fourth proportional to 1,553,135.40, 2,328,320.70 and 921,378.60 is: 1,381,247.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553,135.40 : 2,328,320.70 = 921,378.60 : x
  2. Step 2: Convert to fraction form
    1,553,135.40/2,328,320.70 = 921,378.60/x
  3. Step 3: Cross multiply
    1,553,135.40x = 2,328,320.70 × 921,378.60
  4. Step 4: Simplify right side
    1,553,135.40x = 2,145,264,866,917.02
  5. Step 5: Solve for x
    x = 2,145,264,866,917.02/1,553,135.40
  6. Step 6: Final answer
    x = 1,381,247.81

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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.