Home / 830,429.10-1,145,992.10-448,455.87

Finding the Fourth Proportional to 830,429.10, 1,145,992.10 and 448,455.87

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Solution

The fourth proportional to 830,429.10, 1,145,992.10 and 448,455.87 is: 618,869.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,429.10 : 1,145,992.10 = 448,455.87 : x
  2. Step 2: Convert to fraction form
    830,429.10/1,145,992.10 = 448,455.87/x
  3. Step 3: Cross multiply
    830,429.10x = 1,145,992.10 × 448,455.87
  4. Step 4: Simplify right side
    830,429.10x = 513,926,881,976.35
  5. Step 5: Solve for x
    x = 513,926,881,976.35/830,429.10
  6. Step 6: Final answer
    x = 618,869.07

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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.