Home / 985,407.80-1,478,111.70-887,430.20

Finding the Fourth Proportional to 985,407.80, 1,478,111.70 and 887,430.20

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Solution

The fourth proportional to 985,407.80, 1,478,111.70 and 887,430.20 is: 1,331,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,407.80 : 1,478,111.70 = 887,430.20 : x
  2. Step 2: Convert to fraction form
    985,407.80/1,478,111.70 = 887,430.20/x
  3. Step 3: Cross multiply
    985,407.80x = 1,478,111.70 × 887,430.20
  4. Step 4: Simplify right side
    985,407.80x = 1,311,720,961,553.34
  5. Step 5: Solve for x
    x = 1,311,720,961,553.34/985,407.80
  6. Step 6: Final answer
    x = 1,331,145.30

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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.