Home / 1,152,280.40-1,728,420.60-310,917.20

Finding the Fourth Proportional to 1,152,280.40, 1,728,420.60 and 310,917.20

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Solution

The fourth proportional to 1,152,280.40, 1,728,420.60 and 310,917.20 is: 466,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,280.40 : 1,728,420.60 = 310,917.20 : x
  2. Step 2: Convert to fraction form
    1,152,280.40/1,728,420.60 = 310,917.20/x
  3. Step 3: Cross multiply
    1,152,280.40x = 1,728,420.60 × 310,917.20
  4. Step 4: Simplify right side
    1,152,280.40x = 537,395,693,374.32
  5. Step 5: Solve for x
    x = 537,395,693,374.32/1,152,280.40
  6. Step 6: Final answer
    x = 466,375.80

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1.5x scale

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.