Home / 830,037.18-1,143,043.47-721,092.18

Finding the Fourth Proportional to 830,037.18, 1,143,043.47 and 721,092.18

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Solution

The fourth proportional to 830,037.18, 1,143,043.47 and 721,092.18 is: 993,015.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,037.18 : 1,143,043.47 = 721,092.18 : x
  2. Step 2: Convert to fraction form
    830,037.18/1,143,043.47 = 721,092.18/x
  3. Step 3: Cross multiply
    830,037.18x = 1,143,043.47 × 721,092.18
  4. Step 4: Simplify right side
    830,037.18x = 824,239,707,617.07
  5. Step 5: Solve for x
    x = 824,239,707,617.07/830,037.18
  6. Step 6: Final answer
    x = 993,015.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.