Home / 1,012,138.80-1,516,458.60-478,510.80

Finding the Fourth Proportional to 1,012,138.80, 1,516,458.60 and 478,510.80

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Solution

The fourth proportional to 1,012,138.80, 1,516,458.60 and 478,510.80 is: 716,939.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012,138.80 : 1,516,458.60 = 478,510.80 : x
  2. Step 2: Convert to fraction form
    1,012,138.80/1,516,458.60 = 478,510.80/x
  3. Step 3: Cross multiply
    1,012,138.80x = 1,516,458.60 × 478,510.80
  4. Step 4: Simplify right side
    1,012,138.80x = 725,641,817,852.88
  5. Step 5: Solve for x
    x = 725,641,817,852.88/1,012,138.80
  6. Step 6: Final answer
    x = 716,939.04

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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.