Home / 870,999.64-1,305,274.20-692,715.40

Finding the Fourth Proportional to 870,999.64, 1,305,274.20 and 692,715.40

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Solution

The fourth proportional to 870,999.64, 1,305,274.20 and 692,715.40 is: 1,038,098.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,999.64 : 1,305,274.20 = 692,715.40 : x
  2. Step 2: Convert to fraction form
    870,999.64/1,305,274.20 = 692,715.40/x
  3. Step 3: Cross multiply
    870,999.64x = 1,305,274.20 × 692,715.40
  4. Step 4: Simplify right side
    870,999.64x = 904,183,539,562.68
  5. Step 5: Solve for x
    x = 904,183,539,562.68/870,999.64
  6. Step 6: Final answer
    x = 1,038,098.64

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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.